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Sam, Dean and Luna were each sitting with laptops in the war room in the bunker. The trio was researching a case involving a series of mysterious deaths in a small town. Luna found a pattern in the deaths, identifying the culprit as a rogue wraith preying on people with deep insecurities. She suggested a plan but Dean dismissed it, said it was too dangerous for her to go solo. Luna Winchester had never been one to sit back and watch. But no matter how many hunts she’d been on, no matter how much she proved herself, Dean always found a way to treat her like the little girl he needed to protect. “You’re sitting this one out.” Dean had said, his voice edged with finality.
Luna had clenched her fists, anger bubbling just beneath her skin. “I’m not a kid, Dean! You and Sam go on hunts all the time! Why the hell am I always left behind?”
Dean had sighed, rubbing a hand down his face. “Because I said so, Luna.” Frustrated, Luna stormed out of the room, arguing that he needed to stop treating her like a “kid in pigtails.”
Later, while packing for the hunt, Dean tried to assign Luna a less dangerous role (e.g., staying back to do research at the motel). Luna snapped, accusing him of not trusting her. Sam, caught in the middle, tried to mediate, but Dean shut him down, saying, “She’s not ready to face something like this.” That had been the last straw. She was sick of being treated like a liability, like some fragile thing that needed wrapping in bubble wrap. So she had done the only thing she could—she took matters into her own hands.
Following the lead, they had found, she slipped out of the motel while Sam and Dean were off questioning locals. The wraith had been preying on people in the outskirts of town in a run-down hospital, luring them in with illusions before sinking its venom-laced spines into their skin. Luna had a machete strapped to her back, a silver dagger in her boot, and all the determination in the world.
She wasn’t prepared for how fast the wraith was. The building was derelict, covered in overgrown vines, shattered windows. The second she stepped into the abandoned warehouse, she barely had time to register the figure lurking in the shadows before pain exploded across her side. The wraith moved like a blur, its long, gnarled fingers wrapping around her wrist as it shoved her into a stack of crates. She swung her blade wildly, catching its arm, but the creature only hissed, eyes gleaming with amusement.
“Brave little hunter,” it purred. “But so… uncertain.”
Its spines jabbed into her shoulder before she could move. She felt herself drowning, not in water, but in her own thoughts. The venom worked fast, warping reality into something much crueler. She saw Dean standing over her, shaking his head. “You were never cut out for this,” his voice dripped with disappointment. Then Sam, his usually warm eyes were cold and distant. “We never needed you, Luna.” Memories twisted into nightmares—every mistake, every hunt gone wrong, every time she had hesitated when Dean or Sam never would. The doubts she had buried deep came rushing to the surface. Maybe they were right. Maybe she was just the tag-along sibling, the one they kept around out of obligation. Her breathing hitched as the visions overwhelmed her, pressing against her like a crushing weight.
Meanwhile Sam and Dean realized Luna was missing. Dean found her research notes and GPS coordinates, his jaw clenching as he muttered, “Dammit, Lu’…” The brothers jumped in the Impala and raced to the hospital. Dean was driving the Impala, his knuckles white as he griped the wheel tightly. Sam sat in the passenger seat, scrolling through Luna’s notes on her laptop. “She doesn’t get it, Sam. She doesn’t understand how dangerous this is! She’s not ready for this kind of hunt.” Sam sighed. “She’s not a kid anymore, Dean. You keep acting like she’s helpless, and that’s why she’s out there, trying to prove herself. Can you blame her?” Dean snapped. “Yeah, I can blame her! This thing could kill her, and she’s out there playing hero because she thinks I’m too hard on her. You don’t get it—she’s my responsibility. Always has been.” “No, Dean. She’s our responsibility. But she’s also her own person. If you keep pushing her like this, she’s just gonna keep running, until one day she runs away.”
Dean didn’t respond but the flicker of guilt on his face said Sam’s words hit home. He pressed harder on the gas.
The brothers pulled up outside the run-down mental hospital. Dean’s face was a mixture of anger and panic, while Sam looked focused and worried. “She’s in there somewhere, hurt or worse. We find her and then I’m dragging her back to the bunker. She’s done hunting after this.”
You can’t make that choice for her, Dean. Let’s just focus on keeping her alive.” They grab their weapons—silver blades and shotguns—and head inside. As they moved through the hospital, they saw signs of Luna’s battle;
a blood trail where she was wounded. Sam picked her silver dagger up, which was coated in wraith ichor. Dean picked the pace up, his panic growing. He muttered under his breath, “Come on, Lu’. Where the hell are you?” They followed the blood trail.
Meanwhile Luna stumbled to a wall, clutching her bleeding arm. She was weakened but she refused to give up. She muttered under her breath, “Not bad for the kid sister, huh?” before collapsing for a moment to catch her breath.
“Luna!”
A voice—real, not a hallucination. She barely managed to focus before a shotgun blast rang out, sending the wraith staggering backward. Dean’s arms were around her before she could collapse, his grip tight and grounding. Sam stood beside him, already plunging a silver blade into the creature’s heart. As the wraith shrieked and disintegrated, the poison’s grip loosened, leaving her gasping.
Dean’s face was set in a scowl, but his eyes were filled with something softer. “What the hell were you thinking? You could’ve gotten yourself killed! You’re bleeding all over the place and that thing nearly took your head off! Do you have any idea what would’ve happened if we didn’t get here in time?”
“I wanted to prove I belong here; I belong on hunts with you and Sam…” Luna added weakly.
Dean’s brows furrowed and he cupped her face, forcing her to meet his gaze. “You don’t have to prove a damn thing, Luna. You’re family. That’s enough.” Her chest tightened, emotions threatening to spill over. Sam crouched beside her, his voice gentle. “The venom—it makes you see your worst fears. But that doesn’t mean they’re real.” Luna exhaled shakily, nodding.
Half an hour later they returned to the bunker and another argument was brewing between the youngest and the eldest Winchester as they were walking towards the kitchen.
“This isn’t about me not being ready, Dean. This is about you not trusting me. I’ve been hunting since you guys taught me all about it. I’ve fought monsters. I’ve saved people. But none of that matters to you, does it? I’ll always just be your ‘little sister.’” Luna snapped.
“Because you are my little sister! And if something happened to you—” Dean rose his voice.
Luna cut him off. “Then what, Dean? You’d blame yourself? You’d drown yourself in whisky and guilt like you always do? Newsflash: I’m not anything like Dad. You don’t have to carry me like some kind of burden.” There was a silent in the room suddenly. Dean looked like he’d been punched in the gut. Sam stepped in, trying to diffuse the tension. “Okay, both of you take a breath. Lu’ you’re hurt. Let me patch you up and then we can talk about this later.” Luna sighed and reluctantly let Sam help her. Dean didn’t say another word but the look in his eyes showed he was grappling with everything she said.
After patching up Luna’s wounds, the siblings sat in uncomfortable silence in the bunker. Finally. Dean approached her, a beer in hand. “I’m sorry, alright? But you gotta understand, watching out for you, it’s all I’ve ever known. Sam and I had to raise you when Dad left. I kept us alive.” Luna sighed. “I get it, Dean but you can’t protect me from everything. You have to let me stand on my own. Otherwise, I’ll never be anything but a shadow. Remember what you told me happened when Dad and Sam got constantly into arguments, he left. I don’t want it to happen, I don’t want to leave. Besides I’m 26, isn’t that the age you had when you went to had when you went to pick Sam up at Stanford?” She asked smirking. Dean sighed then pondered what she just said. “Alright, I’ll back off a little but if you ever pull a stunt like that again, not letting any of us know you took off, I swear —” Luna chuckled. “You’ll what? Ground me? Dean laughed while Sam walked in looking relieved to see his siblings laughing again. He had two beers in hands. “I see you two finally made up.” He handed one bottle to Luna and sat across from her.
They shared laughs recounting embarrassing moments. Dean was laughing hard. “Remember when your jeans split mid-fight with a demon or when your flannel got in a fence while we were running and you flew back.” She glared at him. “You’re an ass.”
The tension finally eased. She sighed; she belonged here with those two dorks. She was a Winchester after all.