Joe Banks is a disillusioned man working at a monotonous job in a grim factory. He frequently visits doctors over his constant health concerns and is eventually diagnosed with a terminal "brain cloud," giving him only months to live. Resigned and seeking adventure, Joe agrees to an unusual proposition from a wealthy industrialist: to travel to a Pacific island and voluntarily leap into a volcano, thereby appeasing the local tribe's gods and securing a lucrative mineral deal for the industrialist. As he embarks on this journey, Joe's life takes an unexpected turn as he begins to reclaim his zest for life and encounters eclectic characters, including three women who have a significant impact on his outlook.

As Joe travels, he encounters Patricia Graynamore, the daughter of the industrialist, who helps him navigate his transformative journey. With each step, Joe learns to embrace life's uncertainties and revel in new experiences, sharply contrasting with his previously mundane existence. His journey across land and sea ultimately becomes a voyage of self-discovery and personal growth.

Note: The plot outline deliberately omits any events occurring past the film's midpoint to adhere to the request.