Twins Matthias and Jakob couldn't be more different. Jakob is a happy-go-lucky man who loves to play. His brother Matthias believes in abstinence and books, studying to become a monk. When they head off to supply for a local festival, they meet Gustav, who's like no one they've ever met. Gustav has more in mind than just teaching when he finds the twins. He wants them for his own, and he convinced Jakob to spend a winter with him. Jakob gets Matthias to come along, and on the way Gustav gives them more experiences than they've ever dreamed of. Can they survive his lessons?