He has no idea why Samantha Jones ran away from him. Sam is homeless on the streets of the colony world of Ha'olam, trying to face what’s just happened between her and the Doctor. He’s searching for her, and for answers. While she struggles to survive in a strange city centuries from home, the Doctor comes across evidence of alien involvement in the local mega-corporation, INC — and is soon confined to a prison that becomes a hell of his own making.