How could the disappearance of a simple cat lead to the biggest financial crisis of all times? French documentary filmmaker Thomas Lafite went out looking for an answer: his film The Marvin Case thus explores one of the most incredible stories of the 21st century.

After ratting out his Mafia cohorts, Giovanni Manzoni and his family enter the Witness Protection Program and relocate to a sleepy town in France. Despite the best efforts of their handler to keep them in line, Giovanni (now called Fred Blake), his wife and children can't help but resort to doing things the "family" way. However, their dependence on such old habits places everyone in danger from vengeful mobsters.