Flower, Sun, and Rain is set on the Micronesian island resort of Lospass, and is loosely connected to the events of The Silver Case. The story follows Sumio Mondo, a "searcher" who makes a living looking for things people have lost. Mondo is initially contracted to defuse a bomb planted on a plane, but is so distracted with helping the islanders that the bomb goes off. He ends up caught in a timeloop, where he relives the same day running up to the explosion. Gameplay focuses on Mondo exploring the island, solving numerical puzzles with the help of his computer "Catherine" to solve people's problems on Lospass.