Gnarly guys in a picturesque landscape: these are the old friends Horst and Johann, who retreated to the solitude of the Sauerland many years ago. The duo runs a small boat rental business on the idyllic Möhnesee. Horst, a spiteful misanthropist of the first order, prefers to chase tourists away with his shotgun, while Johann consoles himself for the dreariness of his everyday life with alternating women's stories. But even if the two of them snipe at each other like an old couple, they secretly know what they have in each other. Horst's beloved wife once died in a car accident. For ages, contact with his only daughter Lisa has been limited to a birthday card. When she doesn't arrive for his 66th birthday, the grumpy loner suddenly becomes worried and drives from the provinces to Frankfurt to see how things are. There he meets his grandson Elyas for the first time - but the sarcastic senior citizen and the quick-witted teenager immediately dislike each other. Finally, Horst realises that he has been lured into a trap: Lisa is worried about her father's health and wants to have him examined in hospital. He reluctantly agrees - and receives a devastating diagnosis. When Horst realises that he doesn't have much time left, he calls Johann for help, quickly escapes from the clinic - and with grandson Elyas in tow, the two of them are suddenly on the run from the police in a stolen hearse and on their way back to Sauerland. But the seriously ill Horst doesn't want to simply run away from his fate - he wants to try to come to terms with his life. So the trio sets off on an eventful journey to the places of Horst's past. It becomes increasingly clear that behind his trained loner facade lies, above all, grief for his beloved wife and his lost daughter. The trip to Sauerland represents Horst's last chance to put things back in order.