With his help, Gastambide met with young directors Kim Chapiron and Romain Gavras, with whom he took his first steps in acting career, taking part in several short films and hip-hop music videos (DJ Mehdi, Mafia K-1 Fry).

Thanks to the success on the Internet, the actors of the series Franck Gastambide, Medi Sadoun and Zib Pokti, were invited by Ramzi Bedia to make a cameo in his movie Bacon on the Side.

After that, Frank Gastambide signed a contract with the company Mandarin Cinéma (known for its pictures OSS 117, Brice de Nice, Potiche, The Conquest) for his directorial debut, in which the characters of Kaïra Shopping were supposed to be used.

The consent to the shooting in the debut picture of Gastambide was given by such stars as Ramzi Bedia, François Damiens, Eric Cantona, Élie Semoun, Alex Lutz and Alice Belaïdi, rappers Mafia K'1 Fry, Katsuni and Cut Killer.

After the success of his film Porn in the Hood, Gastambide starred in a number of popular comedies, such as Vive la France, I Kissed a Girl and Good luck, Sam.

His second film had a much larger budget than the first and a number of famous French comedians such as Gad Elmaleh, Ramzi Bedia, Sabrina Ouazani and Malik Bentalha took part in his shooting.