An aspiring comedian embarks on an unplanned adventure with two eccentric companions, leading to a series of misadventures and unexpected revelations.

Fool's Paradise is a satirical comedy following a down-on-his-luck publicist (Ken Jeong), who gets his lucky break when he discovers a man recently released from a mental health facility (Day) looks just like a method actor who refuses to leave his trailer. With the help of a powerful producer (the late Ray Liotta), Ken helps the man become a huge star, even marrying his beautiful leading lady (Kate Beckinsale).

Their adventures lead them to cross paths with drunken costars (Adrien Brody), irreverent unhoused action heroes (Common), unpredictable directors (Jason Sudeikis), a super-agent (Edie Falco), and power-mad moguls (John Malkovich). Fame and fortune are not all they are cracked up to be, and the two men must fight their way back to the things that matter the most.