Once upon a time there was a girl and a boy. The two of them had always been immersed in their own lives, having pulled in too deep in reality, and have never known the world beneath their small city. But when tragic events strike them, they realise that time was running out, and their lives collide in each other's. Before it's too late, they both set out to do something that they never would've done...live. This is the story of how a girl and a boy decided to live, but not all fairy tales have a happy ending.