Petr, a top cardiac surgeon, is a very reserved and introverted man. His 21-year-old daughter Lucie has a congenital heart defect, and Petr decides to operate on her himself during a scheduled surgery. After the operation, they embark on an adventurous trip to a beautiful Nordic island. Here, they have enough time to reconnect with each other. One day, however, Lucie suddenly collapses in the middle of the wilderness.