Young Polly gets out of prison. From now on, everything is going to be different. The start is promising: she finds a job and meets Stefan, a policeman. But then her family thwarts her plan. Her sister’s new boyfriend, a shady guy called Ronny (Matthias Schweighöfer), proposes a crazy deal to Polly’s parents. A sure-fire deal, prefabricated aluminum houses. All they need is a bit of start-up capital. But Ronny has a plan for that too: a small robbery, without any risk.