Christmas is celebrated with the people you love. Right? In De Grote Hummimummi Kerstspecial Hummimummi wants to film a karaoke special, together with his best friend Oessiepoessie, but Oessiepoessie is lovesick and does not want to. They fight and each decide to make their own Christmas show. It ends in a battle, when both of them acquire the help of the best singer of The Netherlands. Will Hummimummi and Oessiepoessie unite before Christmas?

Nicoline, a criminal psychologist, begins work at a prison where one of her new cases, Idris — an apparently reformed sex offender — is preparing for release after five years of confinement. Despite her professional misgivings, she becomes infatuated with her charismatic, manipulative patient.