Two worlds. An impossible love. And a decision that will change everything.

Since Leonidas was born, the only life he has known has been under the authority of Exced. The Surface is a cold, pragmatic and ruthless world where Leo is clear ...

Two worlds. An impossible love. And a decision that will change everything.

Since Leonidas was born, the only life he has known has been under the authority of Exced. The Surface is a cold, pragmatic and ruthless world where Leo is clear about his mission: to wipe out the creatures that inhabit the Underground.

But what if everything he's been told is a lie?

When Exced punishes him by banishing him to live in the Underground, Leo meets Ruga, a rebellious and outspoken boy who will turn his world upside down.

Soon Leo will have to choose: remain a pawn of Exced or put everything and everyone he loves in danger to overthrow the system. I was born to be a Watcher, my sole purpose was to take down the denizens of the Underground. Until I was banished here.

Until I met him.