Katrin Ortrup’s father Franz had been planning to take care of his only grandchild, Leo, to make it easier for Katrin to take over his doctor’s practice. But then Franz has a heart attack. Fortunately, Katrin meets Tanja, a young woman she immediately takes a liking to. They both step in for each other to pick up the kids when one of them is running late. When Katrin is called into the practice for an emergency, Tanja offers to babysit Leo. But when Katrin returns, Tanja has disappeared, along with Leo.
