A man named Hank is stranded on a deserted island, teetering on the brink of suicide, when he discovers a dead body washed ashore. The corpse, which he names Manny, soon exhibits bizarre, lifelike qualities. Initially using Manny's unique gas emissions to escape the island by riding him like a jet ski, Hank quickly becomes attached to his newfound companion. Manny seems to come back to life in odd ways, displaying various capabilities such as spewing fresh water and chopping wood with his limbs. These traits are indispensable to Hank's survival. As Hank drags Manny through the wilderness, they form an unusual bond that borders on the surreal.

Hank slowly teaches Manny about human life and emotions while addressing his own fears and inhibitions. Through their peculiar interactions, Manny begins to speak and express curiosity about existence, love, and societal norms. Hank creates a fantasy world where they reenact everyday scenarios, using debris and their imaginations. This journey of self-discovery helps both characters confront their regrets and desires. Together, they navigate the complex terrain of identity and companionship as they head towards what they hope will be the way back to civilization.