Twelve-year-old Martin is a little too small for his age. Too thin and too quiet, as his mother is unfortunately always reminding him. He and his blue baseball cap are joined at the hip, or rather, at the head. Martin and his parents have just moved to the quiet little town of Bellbach. A new home, a new school, but no new friends. Even on his first day, there’s trouble...

After Leon left his team in the historic 25-1 defeat against the national team, Die wilden Kerle broke up. Only the little Nerv still believes in his old heroes and tries to bring the grown-up guys back together with the help of his dreaded side puller. Leon's former best friend Fabi has meanwhile founded his own team, the girls' team, "The Beastly Beasts", and challenges "The Wild Soccer Bunch" to a duel in the Nattern Cave.

An unsupervised junior soccer team loses its ace player to the leader of a rival gang. Since only an entire team can win, they must have her back to be able to win the game against the national team. The existence of The Wild Soccer Bunch is at stake ...