Young Alex, a pupil in the 5th grade, lives in a blended family. For his birthday, he receives from his eccentric uncle, back from Thailand, a Ninja doll dressed in a strange checkered fabric. Alex discovers that the toy comes alive and that it is talking!
The Ninja offers Alex a secret pact: he helps him become stronger to face his fears and not be intimidated at home and at school. In exchange, Alex must help him accomplish a mysterious mission … This alliance made of friendship, courage and humor will forever transform these two unlikely companions.