Casper is a time traveller from the future who arrives in the 2020s in an attempt to escape his boring and lonely life in the late 22nd century, intending to finance a comfortable and inconspicuous existence through knowledge of future sporting events and lottery results. He befriends Holly, a queer black woman whom he draws into his plans so that they can make quick money. Wanting to keep the flow of events in the future unaltered, he attempts to convince a suicidal artist, Percy, to kill himself by jumping off a building rather than by gunshot, as the artist's future fame hinges on that method of death. Percy is now unwilling to commit suicide, however. Before long the events draw the attention of Doris, another time traveller sent as a local enforcement agent to intercept any disruptors from the future trying to prevent a major cataclysmic event in the 2070s.