Witty and resourceful fourteen-year-old Koko solves yet another mystery - aided by his friends. One of them, Tomo, has recently moved to the city and longs for adventure. The boys notice that their new classmate acts curiously. Step by step, joined by their classmate Marijana, they unveil the boy's dark secret.
Antonio Parač
as Koko
Karlo Maloča
as Tomo
Vanja Markovinović
as Marijana
Toma Budanko
as Mirko
Kristian Bonačić
as Zlatko
Nina Mileta
as Marica
Filip Ružić
as Marko Lukarić
Ozren Grabarić
as Koko's father
Dijana Vidušin
as Koko's mother
