Kogda v nyu-yorkskoy psihiatricheskoy bolnitse poyavlyaetsya novyy patsient, nikto ne somnevaetsya, chto tam emu samoe mesto, ved on utverzhdaet, chto pribyl s dalekoy planety, gde tsarit polnaya garmoniya. Vprochem, eto ego edinstvennaya strannost - v ostalnom eto zdravomyslyaschiy, intelligentnyy i priyatnyy chelovek, kotoryy menyaet k luchshemu zhizn vseh, kto ego okruzhaet.
Neveroyatnaya istoriya prota - patsienta psihiatricheskoy bolnitsy, nazyvayuschego sebya prisheltsem s dalekoy planety KA-PEKS, - i talantlivogo psihiatra, kotoryy pytaetsya izlechit zagadochnogo bezumtsa.
Skol tonka gran, otdelyayuschaya fantaziyu ot sumasshestviya, a sumasshestvie - ot chuda?
Na osnove romana byl snyat odnoimennyy film s Kevinom Speysi v roli prota.