"Okay guys," I start. "The reason why I asked you to come here is because I need your help. Caleb, when is Tris's birthday?"

"March 15th," he replies. "Why?"

"Well, Tris never celebrated her birthday before since she came from Abnegation, so I want to throw her a surprise party. And it has to be perfect. Will you guys help me?"

Everyone agrees.

All of a sudden, Peter bursts into the room. "Ooppa Gangnum Style!" he says and does some weird dance I've never seen before.

"Okay then....." I say. "Well, we should probably get out of here before Tris becomes suspicious."

"I'm afraid you won't be looking for her," says a voice.

I turn around.

It's Nita.