A troubled young boy, Oskar, is trying to cope with the loss of his father. Oskar starts lashing out at his mother and the world. Until a year later, he discovers a mysterious key in his father's belongings and embarks on a scavenger hunt to find the matching lock, just as he used to when his father was alive. On this journey he is bound to meet a lot of people and learn a lot about himself and his family, but will he ever find the lock?

When mankind is about to come to an end, a group of scientists decide to create and populate a city deep underground. The city of Ember is to last for 200 years after which its inhabitants are to retrieve from a strong box instructions to return to the surface. Over time however, the message is lost and life in Ember is rapidly deteriorating. Their power supply is failing and food is being rationed. It's left to two young adults to unearth the secret of Ember and to lead the way out.

One choice can transform you-or it can destroy you. But every choice has consequences, and as unrest surges in the factions all around her, Tris Prior must continue trying to save those she loves--and herself--while grappling with haunting questions of grief and forgiveness, identity and loyalty, politics and love. Tris's initiation day should have been marked by celebration and victory with her chosen faction; instead, the day ended with unspeakable horrors. War now looms as conflict between...