In a futuristic New York known as New Rome, visionary architect Cesar Catilina dreams of building "Megalopolis," a utopian city that redefines society’s limits. Opposing him is the corrupt Mayor Franklyn Cicero, who clings to power and profit. Between them stands Julia, the mayor’s daughter, whose love for Cesar forces her to choose between loyalty, ambition, and the fate of humanity.

Seattle filmmaker Oliver Tuthill Jr. directs this deadpan mockumentary that imparts the legend of Willatuk, a fictitious sea serpent that American Indians first spotted swimming in the waters off Puget Sound in 1736. Narrator Graham Greene explores the history of the mysterious creature that's considered sacred by a Pacific Northwest Indian tribe, which vows to protect it from the competing interests of local hunters.