Charlie finds herself caught up in a dangerous mission.

She is caught by the people of the tower, taken back, and says that she was going to hide in the walls.

Her 13th birthday is coming up and she wants to find somewhere to live and not have to worry about survival.

Ali is going on a mission and she says that she can help out.

They are caught by Arno's people, but they escape.

However, Ali locks Charlie in an elevator and leaves her for dead.

He ultimately goes back to get her and they build a connection.

At the tower, Charlie faints and we learn that she has radiation poisoning and there's no telling how long she has left.

She is upset but Ali is there for her. They share a kiss because of what he sets up for her birthday.

She then tells Ali she needs to get to the top and show the message to Morgan.

Ali says he will do it and then Howard catches him.

He throws Ali overboard and Charlie sees it happen form the window and screams.

Howard comes back down and says it was Charlie's fault, but June says he better not touch her. She's the nurse and is more vital than him to Strand.