 Dolf is a 15-year-old boy from Rotterdam who plays for the junior national football team.At the beginning of the film, Dolf and his team are playing an important championship game against the Belgian team in the German city of Speyer, They were trailing by a goal, and got the chance to equalise in the final minutes which Dolf blew.Dolf's mother works in a research centre in Rotterdam where a time machine has been developed.