There are two people who wake up in the same bed one morning, and neither of them has a clue who the other is. Viivi would like to run away and the man is sleeping like a log. Unlike Viivi and Andu themselves, the viewers know both very well. They know that Viivi has the worst day in her life and that Andu is a dweeb, but not completely hopeless; a rather good-hearted man. They are both hopelessly lonely people hoping that maybe there's someone somewhere - So they might as well meet.

Three sisters (doctor Piret, interior designer Mari and psychologist Kertu) discover that they have one more sister. Shocking news challenges family relationships and forces them to ask why their mother has hidden her first child's existence. When the fourth sister decides to come and visit her mother and sisters in Haapsalu, events that nobody could expect started happening. Is blood thicker than water and the stranger becomes theirs?