A retired California banker sets out alone in search of a mystical Appalachian spring to mourn the loss of his late son. Along the way he bonds with three other unhurried trekkers who help lift his spirits as they ingest an abundance of space cake and a few magic mushrooms. Afterwards, they start a chain of successful marijuana bakeries in states where the recreational use of cannabis has been normalized. But when one of them dreams about the approaching covid pandemic, they hurriedly sell their chain of bake shops and move halfway around the world to Lindos Greece to ride it out. With their tuneful singing, unconventional hats, and prurient dreams, the four of them soon learn to overcome not only space and time, but any objections.