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 our gang embarks on a quest for the antidote.
Olivia Viikant
Mari
Arabella Antons
Sadu
Hugo Soosaar
Olav
Karl Jakob Vibur
Anton
Mirtel Pohla
Kadri Heller
Evelin Võigemast
Reet Haljandi
Ott Aardam
Hannes Haljandi
Tiit Lilleorg
Peeter Remmelgas
Sten-Markus Rohtla
Leo
Gregor Kelder
Vant
Meriliis Lillemägi
Cätly
Sampo Sarkola
Arttu Peltomaa
Karin Rask
Sadu's Mother
Baruto Kaito
Sadu's Father
Jaak Prints
Officer Kuul
Tõnu Oja
Officer Lippus
Jonathan Peterson
Uncle Kristjan
Ain Lutsepp
Mayor
Argo Aadli
Hillar Vesimaa
Ardo Ran Varres
Guard
Peeter Volkonski
Librarian
Sander Rebane
Paul Veenre
Lauri Nebel
Cemetery Guard
Külliki Saldre
Head Nurse
Alo Kurvits
Strong Man Attraction Manager
Anni Aguraijuja
Student
Riste Lehari
Student
Oleg Rogatšov
Igor
Anu Lamp
Mrs. Rovel
Rein Pruul
Rich Man
Maria Peterson
Anton's Smartphone (voice)
Tõnu Karjatse
Radio Announcer (voice)
Anatoli Arhangelski
Mephistopheles
Daniel Kirspuu
Faust
Lauri Sirp
Conductor
Kristina Lõuk
Childish Minded Woman in the Sandbox (uncredited)
Meelis Veeremets
Childish Minded Man in the Sandbox (uncredited)