Nobody in the Rigi family is really looking forward to the Christmas Child this year. 13-year-old Sima and her little brother Elyas know: Mom Leonie and dad Kian are going to split up! Even Kian's parents Britta and Navid, who want to spread Christmas cheer, can't turn the tide. Only after a false alarm about Elyas, who has suddenly disappeared, do the tensions ease. The newlyweds make a discovery on their doorstep: a baby just a few weeks old. After a confession from him, the search begins for the mother - and the reason why the foundling should be with parents who are separating.

She is excited, angry and scared as she meets her biological father for the first time. Can she sort out her chaotic emotions?