Pintar Pintar Bodoh (1980)

Dono, Kasino, Indro, and Dorman want to open a detective agency. However, because of disagreements between them, their friendship was split into two groups, namely Kubu Kubu Casino-Dono and Indro-Dorman. Both sides are competing to be the best detectives. Competition begins when they're looking for a beautiful secretary and promote their prowess.