After a mysterious energy pulse disrupts the spaceways, the Koppai Federation sends three explorers — Alph, Brittany, and Charlie to a verdant, uncharted planet called PNF-404 to recover a sustainable food source. The planet is strangely familiar, filled with overgrown relics of a lost civilization (possibly human). Upon crash landing, the trio becomes separated and must reunite with the help of curious, plant-like creatures called Pikmin.