Tommy’s Mystery. Sissi has returned to Possenhofen and is meeting her father there! The joy of seeing you again is great. When Sissi and her little friend Toni go into the forest to collect berries, they are surprised by Arkas. They get unexpected help just in time: Sergeant Thomas has secretly followed them! Count Arkas is horrified at the sight of the stranger. He recognizes an enemy from days gone by who still has scores to settle with him.