I've been dying to write this prompt since I watched Season 2, so we'll see how it goes. Please review, it'd mean the world! Thanks!

Prologue:

A young Bellamy sat on the edge of his bed, glancing at the sleeping forms of his three year old sister and his mother. Bellamy tapped his foot restlessly, unable to sleep. At that moment, he decided to go explore some hidden airducts that he'd discovered in the previous months. He stood up and crept across the room, treading lightly to avoid noise. The door opened with a quiet creak, and he cringed, certain he would get caught. His mother rolled over, but stayed asleep, hugging her daughter close to her body. Bellamy let out a sigh of relief, slipping away and crawling into the hidden airduct entrance that he'd accidentally noticed. He crawled through as quietly as he could manage, hoping to not disturb any of the residents of the Ark.

Suddenly, he heard an echo of a scream. He followed the noise, curiousity instantly overcoming his fear. A moan of pain soon followed, getting louder as Bellamy neared the sound. He stopped right above the noise and peered through the vents, squinting so that he could see what the commotion was. In the dim lighting, he could make out a woman in severe pain clutching a man's hand. She stifled another screech, instead letting a low moan escape her lips. As Bellamy's eyes adjusted to the light, he could see tears streaming down the woman's face, as well as a pool of blood on the ground. He continued to watch, simultaneously searching his mind. He knew it seemed familiar in some way, and that's when it hit him. This woman was giving birth.

Bellamy inched forward to get a better view when, suddenly, the vent fell out from under him and he tumbled out of the ceiling, landing on the ground with a loud thud. The man, who was strangely familiar to Bellamy, jerked his head around and stared at him, a mixture of shock, anger, and fear appearing upon his face. "I-I'm sorry Sir." Bellamy said meekly, looking at the ground.

"Be right back" The man whispered, squeezing the woman's hand. He stood up, walking over to Bellamy quickly. "What are you doing here?" He hissed, gaze boring into Bellamy's.

"I, I was just-" He cut off, gazing up in wonder. "Kane?" He questioned quietly, quickly recognizing the features of the Councilman.

Fear quickly flashed in Kane's eyes before it was masked by coldness. "You shouldn't be here. It's past curfew. I am-" He was cut off by a pained scream. Kane sprinted over to the woman.

Bellamy watched with a mixture of horror and fascination, at the same time contemplating whether he should run or not. He knew he had no chance, so he decided to stay. He cringed as the woman groaned, covering her mouth with one hand. After what seemed like an eternity, she let out one last muffled scream and the baby was born. Kane picked up the bloody baby as it began to cry, washing it gently before giving it back to the new mother. The baby stopped crying as the woman kissed its forehead.

"He's perfect Abby." Kane whispered, smiling proudly.

The words sent a jolt through Bellamy's system. He knew Abigail Griffin was on the Council with Kane. And he knew she already had a child. He shuddered, knowing what would happen if somebody found out. It turned out he wasn't the only one with a sibling on the Ark he thought with a grim smile.

A voice cut into his thoughts. "What would you like to name him?" Kane asked Abby softly, happiness gleaming in his eyes.

"Alexander. Alexander Kane." Abby murmured in reply, closing her eyes.

Kane kissed the top of her head before slowing walking over to Bellamy. "You musn't tell anyone about this. Do you understand?"

Bellamy nodded, sincerity in his gaze.

"Do you promise?" Kane questioned, worry clear upon his features.

"I promise." Bellamy replied, knowing he couldn't tell a soul, because they'd all be floated. He'd heard the lecture from his mother enough times about Octavia. "Can I ask you something though?"

Kane nodded slowly, sighing.

"Isn't Abby married to Jake Griffin?"

"She is, but she doesn't love him." Kane replied simply. "Now you better get home. Go back the way you came."

Bellamy nodded, looking up at the air vent as Kane lifted him up, helping him get in and placing the vent back on. "Keep it a secret. Please." Bellamy smiled slightly, nodding and crawling through the airducts back home.