Sergey was abandoned by both his biological mother and foster parents. All he knows about himself is that he is from a large family and his last name is Kuzin.
Lilia grew up in a loving foster family and only recently learned that at birth her name was Galina Cousin.
Alexey found out that his foster parents had saved his life, and that his name was Pavel Kuzin.
Will all the children of the same cuckoo mother meet in the studio?