The new Minister is a tall man named Nevio. I still haven’t gotten used to seeing the Minister’s insignia hanging around his neck. I still think of it as belonging to my mother.

Why would anyone choose to go Above if you die so young and have to work so hard? the children of the Below used to ask each other when we were smaller. And I never answered, but I kept a long list at home of all the reasons I could think of to go Above. You could see the stars. You could feel the sun on your face. You could touch a tree that had roots in the ground. You could walk for miles and never come across the edge of your world.

“Come forward,” Nevio says to the first person.

“I accept my fate Below,” the girl says. A murmur of approval goes up from the crowd. For all the grand speeches about the virtue of sacrifice, the people of Atlantia like it when the youth validate their own choice to stay Below. Nevio the Minister nods and dips his fingers into the bowl of seawater and sprinkles it over the girl, speckling her face with drops too small to be tears. I wonder if it stings.

The first person to choose the Above is surrounded by the peacekeepers and swept away to a secure location. There is no opportunity to say good-bye to friends and family. Once the ceremony concludes, the peacekeepers load everyone who has chosen the Above onto a transport and send them up to the surface. The finality of the decision always appealed to me—no loose ends, only leaving. I knew it would be hard to see my mother’s face when I made my choice, but she would have Bay. They wouldn’t be alone, and I would—at last—be Above.

But when my mother died, everything changed.

Another boy goes up for his turn. I know him by sight—Fen Cardiff, handsome and charismatic, with blond hair and dangerous, laughing eyes. There’s an irreverent, ironic note in his voice even as he speaks the sacred words. “I choose sacrifice in the Above.”

I think I hear a woman cry out. She sounds surprised and wounded. His mother? Didn’t he tell her what he was going to choose? He doesn’t glance up into the stands—instead, he turns around to look back at the rest of us in line, as if searching for something or someone.

In the moment before the peacekeepers take him away, I find myself staring right into his eyes, eyes that will soon see the Above. I am so jealous of him I can hardly breathe. But I promised Bay I wouldn’t do it, that I’d stay here with her. My palms feel sweaty. I promised Bay.

She is the only person I’ve ever told that I want to go Above. That I dream about it every night, that when I see the immense glass jar of dirt on the altar in the temple I can picture exactly how it would feel to touch it and smell it, to have it under my feet and all around. And in the years before my mother died, Bay promised that, when the time came, she’d let me go. She herself couldn’t bear to leave Atlantia—she loved the city and my mother too much—but Bay assured me that she would keep my wish a secret so that no one could try to stop me. Once I declared it in front of the crowd at the temple, my mother would have no choice but to let me leave. Even the Minister and the Council cannot override the decision of each individual person regarding the Above and the Below.

I love my mother and my sister but, for as long as I can remember, I’ve always known that I need to see the Above.

But I can’t go.

On the day my mother died, Bay cried so much that the water from her tears streamed down into her hair, and I had the fleeting thought that my sister might turn into a mermaid, with seaweed hair and salt always on her face. “Promise me,” she said when she could finally speak, “that you won’t leave me alone.”

I knew Bay was right. I couldn’t leave her, now that my mother was gone. “I promise,” I whispered to Bay.

The only way for Bay and me to stay together is to remain Below. While we can both choose to stay, both of us cannot choose to go because we are the only two children in our family. One person from each gene line must always remain in Atlantia.

A few more people, and it’s my turn.

Nevio the Minister knows me, of course, but his expression when I come to the front remains impassive, the way it has for everyone else. My mother would have been the same way—she was always different in her Minister robes, more removed and regal. But would she have kept her composure if I’d said I wanted to go Above?

I will never know.

The salt water is in a blue bowl; the dirt in a brown one. I close my eyes and will myself to speak in the right voice—the flat, false one my mother always insisted that I use, the one that hides the curse and gift that is my real voice.

“I accept my fate Below,” I say.

The Minister flecks salt water onto my face, blessing me, and it is done.

I turn back to watch Bay come past the altar. She is moments younger than I am, or she would have gone first. Watching my sister is a bit like watching myself make the choice. The processed air of the temple moves over us as if Atlantia truly breathes.

Bay has a soft voice, but I have no trouble hearing her.

“I choose sacrifice in the Above,” she says.

No. Bay. She said the wrong line. She was nervous and made a mistake.

I move to help her. There must be a way—

“Wait,” I say. “Bay.” I look at Nevio the Minister to see if he can stop this, but he stares at Bay, an expression of surprise flickering across his face. It’s only a moment that I glance at him, but it’s too long. Peacekeepers surround Bay, as they have the others who chose the Above.

“Wait.” No one hears me or pays attention. That’s the purpose of the voice I use.

“Bay,” I say again, and this time there’s a tiny hint of my real voice in my tone, and so she turns to look at me, almost as if in spite of herself.

I am stunned at the sadness in her eyes, but not as much as I am at the purpose I see there.

She meant to do this.

In the seconds that it takes to wrap my mind around the impossible—This is no mistake, Bay wants to leave—they pull my sister out of reach.

I push through the crowd quickly and quietly, trying not to cause a scene because a scene will be stopped. The priests all know me, and they know that Bay and I are inseparable. Already some of them move in my direction to block my path, sympathetic expressions on their faces.

Why would Bay do this?

Justus, one of the kinder priests, comes closer and reaches out to me.

“No,” I say, my real voice, my real pain and anger cutting and coming out, and Justus drops his arm down to his side. I look up and see his face—shocked, stunned, slapped with the sound of me speaking.