In a comedic retelling of a famous battle, a small group of Spartan warriors, led by Leonidas, sets out to defend their homeland against the invading Persian army. Leonidas, a muscle-bound and well-meaning but not exactly the brightest leader, is accompanied by his beautiful wife, Queen Margo, and a ragtag band of warriors who are far from the fierce soldiers of legend. Their journey is filled with parodic encounters with contemporary cultural icons, absurd obstacles, and over-the-top physical comedy. From the outset, the Spartans face impossible odds and a barrage of outlandish challenges, including musical delinquents and venomous penguins.

As they march toward impending battle, the Spartans' encounters continue to escalate in ridiculousness, lampooning various pop culture references, celebrity cameos, and even other movies. Along the way, the film piles on the slapstick humor, sight gags, and rapid-fire jokes. The clash of civilizations takes a backseat to the relentless parody, with the focus remaining on the absurd scenarios and the generally clueless, but determined, Spartan warriors. The story unfolds at a frenetic pace, building toward a bizarre showdown that challenges the very fabric of epic historical narratives by infusing them with farcical elements.