Four children - Mari, Sadu, Olav and Anton form a secret society to play hide-and seek games invented by Mari's grandfather, a professor at the university. When the city is attacked by a mysterious poison which turns adults into children … Olivia Viikant, Karl Jakob Vibur, Hugo Soosaar, Arabella Antons, Mirtel Pohla, Evelin Võigemast, Ott Aardam Added on Amazon Prime 2020-12-17. Youtube Trailer