Disclaimer: I do not claim to own Once Upon a Time.

I had this idea a short while ago so I wanted to write it down while it was still fresh in my memory. One-Shot based on the promo for 5x19, "Sisters," between James, Robin, and Emma.

Emma, Robin, and 'David' were walking down the road that lead to the legendary line of Storybrooke. Hook, Regina, Cora and Henry were all confronting Zelena to stop her from kissing Hades. The real David was still unconscious in the middle of Main Street.

"How's the baby been?" Emma questioned Robin. She didn't know much about this man, and decided that she'd have to learn more of his backstory at this point. Obviously, she'd meant to before today. But between the Wicked Witch happening, Ingrid arriving and freezing Marian(who, turned out to be Zelena in a glamour spell), resulting in Robin taking her and Roland to New York, dealing with Rumple and the Queens of Darkness, becoming the Dark One herself, and arriving in the Underworld to save Killian, Emma never seemed to find the time to sit down and have a conversation with this man.

"She'd been doing great," he replied, a smile plastered on his face as he thought about her. "I hope that allowing Zelena to see her will help her realize that she doesn't need to kiss Hades to be happy."

"Does she not notice how he's a bad influence on her?" 'David' butted in. "I mean, shouldn't she know that since we've been keeping her from seeing her child because of Hades?"

Emma and Robin stared at 'David' in surprise. They all stopped walking.

"Dad, you know we've been keeping her from the child only because she told us to…"

He laughed nervously. "Right, I forgot."

Everyone laughed after that, and Emma teased him by saying he's turning into an old man. 'Younger than Killian,' he'd snickered back.

That made Emma narrow her eyes in confusion. Since when did David start calling Hook by his real name? Shaking her head and brushing it off, they continued down the road.

A good ten minutes later, far from the town, Emma felt something being placed on her wrist. Before she even pulled her arm up to look, she knew what to expect. However, it still shocked her when she saw the all-too-familiar cuff once again resting on her arm. Glancing up, she saw her father aim a gun at Robins' head.

"One pull of this trigger, well, you're not a visitor here in the Underworld," he said.

Emma put the pieces together. Him acting strange the entire time. Saying he forgot why they are keeping the baby from Zelena. Calling Hook Killian instead of Hook like he always does. She felt so stupid for not realizing it before now. This man wasn't her father. This was his brother.

"James," she breathed out.

"Indeed." He smirked. "I expected much more of a fight from dear old Dave. All it took was one hit and he went down." James pried his eyes off of glaring at Robin to study Emma. "So you're the one. The savior. I'd say it's an honor to meet you, but you're my brothers' daughter. That just won't work, now will it? Can't let Dave have everything. Guess I'll have to take… something away from him." All the while James was speaking, Emma's mind was racing. She had to think of some escape plan...

"You don't have to do this. Let Robin go," she pleaded. "Please. He has a baby and another child. Let him go. You can keep me."

Robin looked like he was about to protest but one warning glare from Emma shut his mouth. She could only hope that he understood her plan and went along with it. He nodded his head just barely enough for it to be noticeable but also just enough for Emma to know that he understood. With a deep breath, she took a step forwards, towards James, and a little further away from Robin. James kept his eyes trained on her. He turned the gun slightly towards her and she instantly raised her hands to show she meant no harm. James darted glances between to two living people, knowing that they were trying something. He slyly lowered one hand and reached for the electrode he'd used on David.

All the while Emma slowly walked in a circle around James, Robin was waiting for just the right moment to attack from behind. Both were too focused on watching his facial expressions to try and see if he'd shoot that neither noticed him grab the other weapon with his left hand. So neither were prepared when Robin lunged forwards, only to be met with electricity surging through his left arm. His body thumped to the ground.

Emma leapt forwards while his focus was on Robin. She managed to get one punch in before he kicked her away with all his strength. Emma went skidding across the road and landed in the ditch between the road and the forest. Gripping her gut in pain, she prepared to lift herself back out when James appeared at the top. Emma froze in her spot. They were so focused on each other that they didn't see or hear the outlaw sprinting away to get backup.

POV Change:

"What do we do about her?" Cora asked, staring Cruella down. The black and white haired puppy hater had been caught by the heroes listening in on their plan to stop Hades. "She's one of Hades' dogs. Loyal to her last breath."

"What? Kill her," Regina said as though it were obvious.

"It's a step in the right direction..." Killian added, though he was a tad unsure.

"Are you two crazy? We can't just kill her! You're not murders anymore! Besides, we all know what her unfinished business is," Henry pointed out. "We help her, we help Emma, right? So why not let them work it out, together. That way, Cruella can go to a better place, and Emma's heart can be fully fixed. She's been much too guilty about her death."

"Oh, darling, don't you get it? I don't want to be saved, unless it's going back to the overworld," she snapped at all of them.

"Whatever," Cora said, turning her attention back to her daughter. "You said Emma went with Robin and David to check out the town line?" A nod answered her question. "Well, let's go see how they're doing. We don't have all day, after all." With a snap of her fingers, Cruella fell to the ground, unconscious, and they began walking down the long road that lead to the town line.

The heroes hung their heads awkwardly. "Actually, we do," Killian said, a bit hesitant.

"What?"

Killian scuffled his feet, so Regina answered for him. "Emma refuses to sleep. Honestly, she's just going to make herself pass out from exhaustion, but she won't listen to anyone about going to sleep. We're kinda just waiting for her to knock herself out."

"When's the last time she slept?" Cora was genuinely curious.

"She's slept once since she rescued Killian, and that was four days ago. She passed out then, so we're certain it'll happen again soon."

An uneasy silence settled over the group until they saw a tiny shape in the distance running towards them. They halted and waited. As the shape became bigger and more noticeable, Regina recognized Robin and ran as fast as she could in her heels to meet him.

At the same time, Henry turned around and exclaimed, "Grandpa?"

Both men had to take a few seconds to catch their breaths. "James," they gasped at the same time. David stared at Robin in alarm, now knowing that his brother was alone with his daughter.

"How long?" David demanded.

"Five minutes," Robin Hood gasped.

Without even sharing a glance, everyone began sprinting down the road.

POV Change:

"You foolish girl," James snickered at Emma. She kept her mouth slammed shut and glared at him, her eyes like daggers. "Did you really think, you, a girl, could stop me? My brother must've raised you poorly." He paused when he saw Emma wince, knowing he his a sore spot. "Oh wait, he didn't raise you. He sent you through a magical wardrobe, isn't that right?" he recalled. "He set up quite the example for you to give up your son as well."

That angered Emma, and she hurtled herself out of the ditch, kneeing him in the gut. He smirked despite the sudden attack and tightened his grip on the gun so he wouldn't drop it. She went to knee him again, but James grabbed her leg, lifted her high into the air, and slammed her back-first onto the rocky pavement. Emma gasped in surprise and pain as the all the air was forced out of her lungs. She quickly rolled to her left, having correctly anticipated that James was going to try to slam his boot into her stomach. The thud of a heavy foot confirmed her suspicions. Emma felt her adrenaline kick in as she pounced off the ground, barreling into his side and taking them both down.

James recovered first and landed on top of Emma, flipping her so her stomach was against the ground and her back to the sky. He grabbed a big handful of hair and yanked upwards, drawing out a low howl of pain from the blonde, before putting her in a sleeper hold. She thrashed around desperately beneath him, her attempts becoming more futile by the second. In a last desperate attempt to free herself, she reached backwards, grabbed onto his ear, and pulled with all the strength she could muster.

Thankfully, it was enough and he released her, causing her to lose her grip on him as well. He stood up, cursing, and released the safety hatch on the gun, training it on her left side as her body heaved for breath. Out of her peripheral vision, Emma saw the gun and twisted away, pulling herself to her feet and aimed a punch at his nose. He dodged, and suddenly his left hand shot far up and to the left.

She heard the crack of the butt of the gun on her skull before she felt it, and the blonde fell to the ground. A yelp escaped her lips and she clutched her cheekbone, blood slowly trailing down her face. James grabbed her by her neck and lifted her into the air again so she could stand. He raised his hand again and another howl echoe through the trees as he connected the gun with the back of her head. Emma's vision became blurry from the pain and she managed to glare at the man towering above her cowering form. He lifted the gun and pulled the trigger.

Pain like she'd never felt before tore through her right shoulder and Emma felt a few tears slip down her face. Forcing herself to ignore the pain rattling in her skull, she lifted her left arm and felt around her right shoulder, crying out when she touched the wound. Emma pulled her hand back and saw her blood staining it. Before Emma even had the chance to plead for mercy, another shot rang out and Emma sat bolt upright for heartbeat before crashing back down as a new wave of pain scorched her right leg. Through her blurring vision, Emma stared up at James, who had his arms crossed, admiring his handiwork.

"I didn't want it to have to come to this," James sighed. "But you've left me no choice." He aimed the gun at her head and Emma silently sent an apology to her family and friends for failing. "I'll give you credit, though. You put up much more of a fight than I expected. I can see why the Shepherd loves you."

"You've got one thing right," another voice rang out. Emma became confused as she saw another James appear and knock the gun away, tackling the man. She assumed it must be David, but the darkness that was edging in her vision made everything too fuzzy.

"Emma? Stay with me, you hear? Emma!" A long pause drew out as he waited for her to respond. When he received none, he shouted, "Regina! We need you right now!"

Emma tried so hard to hang onto the light and managed to mutter, "Ki-Killian?" before she succumbed to the welcoming darkness.

Many hours later, Emma awoke in her parents bed in their Underworld apartment. She groaned and went to touch her head. A gentle hand grabbed hers and lowered it back to her sides.

"Emma? Can you open your eyes for us?"

She hadn't even realized that her eyes were still closed and struggled to open them. They shot open, however, when she heard her sons' voice.

"Mom!'

"Henry!" Ignoring her pounding headache, Emma rolled out of bed and engulfed her son in a bone crushing hug before her sleep-deprived body gave out on her. Killian caught her and helped her lay back down again, planting several soft and gentle kisses to her forehead and cheeks.

"Don't you ever scare the hell out of us like that again," he half demanded, half begged her. Emma nodded sleepily in response.

"No more heroics," she agreed, studying Henry's face. Relief and something else was written on his face. Shrugging down the feeling that something happened and deciding to ask later, Emma fell back asleep, surrounded by the whispers of those she love. And those who love her.