Catrasca (Jorge Porcel) is a man who works in a restaurant and in his spare time helps in a children's home. His problem is that he carries a family tradition that makes him cause catastrophes in his path, one of which takes his boss (Adolfo García Grau) to the hospital.

Upon leaving the hospital, Catrasca is run over by Graciela (Graciela Alfano), the daughter of Professor Galíndez (Osvaldo Terranova). This is how he meets this professor, who has a formula that says he will be the salvation of humanity, so he is the object of persecutions by villains such as Dr. Linda Winters (Moria Casán).

El Catrasca torpe pero de buen corazón provoca accidentes y caos dondequiera que va. La Graciela amablemente obtiene Catrasca un trabajo como asistente de su padre, el Dr. Galindez. Tres grupos de espías internacionales compiten para robar una fórmula Galindez ha inventado, pero confundir con la receta secreta familiar de Catrasca para un punzón alcohólica.