Author Frank's debut novel is successful, but he needs the proceeds to pay off a debt and his girlfriend Mascha ends their relationship. He meets another woman, but he and Mascha also seem to make amends. These amorous vicissitudes give him inspiration for a new book, which will deal with eroticism in the Netherlands.

When Sinterklaas has an accident during the test for his “roof certificate,” he ends up in the hospital. Everyone is terribly worried — everyone except the evil Dr. Brein. She wants to use this opportunity to become Sinterklaas herself and change the holiday forever...