On this particular night, Alex North really just wanted to see in his birthday with his girlfriend Mona. But instead of Mona, it is his old friend Walter, a likeable restaurant owner, who is suddenly standing in front of his door, flanked by two bodybuilders. Alex is surprised. Walter demands that Alex give him his money back and, to lend some weight to the demand, he has Alex injected with a poison which will kill him within 80 minutes. Alex will only get the antidote from Walter if he manages to settle his debts. Then all will be forgiven and forgotten.

For Alex, the most turbulent night of his life begins. A race between life and death. In the process, he has a car accident and ends up being pursued by the others involved in the accident. He hasn’t had any contact for years with his brother Vincent, but it is Vincent that Alex has to convince to lend him the money he needs. And, as if that weren’t enough, the police are after him as well, and a biker gang latches onto him and his friends Lloyd and Floyd, who have come to help him. The biker gang bails up the trio and Alex is forced to watch as Lloyd, with whom the gang leader apparently has a score to settle, is shot dead. Alex is able to escape, but the bikers are quickly after him. A merciless nighttime chase through Berlin begins, but with Mona’s help, Alex manages to escape by a hair.

With only few minutes remaining, Alex can clearly feel the effects of the poison. He is sick, dizzy and everything is going blurry in front of him. In Walter’s restaurant, Alex is on the verge of handing over the money. But Walter hesitates, playing for time. And then, just as Alex finally seems to be losing consciousness once and for all, comes the big surprise: a huge birthday gathering is suddenly standing in front of him. And they all sing “Happy Birthday”. Among the party guests are his brother Vincent, Lloyd and Floyd, both uninjured, Mona, the bodybuilders and the entire Harley gang.

The entire evening has been a setup to teach Alex a lesson on his birthday, to make him a somewhat better human being. The injection contained nothing more than a harmless mix of stimulants… Alex, relieved and overjoyed, falls into Mona’s arms.