In the Headquarters of the T.I.A. (Terminal Intelligence Agency), someone has stolen Professor Bacterio's most dangerous invention, the D.O.T. (Demoralizer of Troops), an artifact that ends up in the hands of a very short, wacky dictator who is ready to use it for criminal purposes. The T.I.A Chief, though, is firm in his resolve: if he wants to get the D.O.T. back, he must NOT count on his agents Mortadelo & Filemon. But when the crime fighting duo discover that the T.I.A. has engaged a cocky and slimy detective from outside the agency, they decide to act at their own risk, even if that risk involves all of Humanity.
Unfortunately the movie Mortadelo & Filemon: The Big Adventure is not yet available on HBO Max.
| Camera | Xavi Giménez | Director of Photography |
| Writing | Javier Fesser | Writer |
| Directing | Javier Fesser | Director |
| Writing | Guillermo Fesser | Writer |
| Editing | Iván Aledo | Editor |
| Writing | Francisco Ibáñez | Characters |
| Art | César Macarrón | Art Direction |
| Sound | Mario Gosálvez | Original Music Composer |
| Sound | Rafael Arnau | Original Music Composer |
| Costume & Make-Up | José Antonio Sánchez | Makeup Artist |
| Costume & Make-Up | Tatiana Hernández | Costume Design |
| Costume & Make-Up | Paquita Núñez | Hairstylist |
| Production | Enrique López Lavigne | Executive Producer |
| Production | Luis Fernández Lago | Unit Production Manager |
| Production | Marina Ortiz Lenoir-Grand | Production Manager |
| Production | Rosa Estévez | Casting |
| Visual Effects | Félix Bergés | Visual Effects |
| Production | Luis Manso | Production Manager |
| Production | Fernando Bovaira | Executive Producer |
| Production | Luis Manso | Executive Producer |
| Crew | Raúl Romanillos | Special Effects |
