A man faces death after an attack, but his life is spared when time travelers Ami and Agatha nurse him back to health. When he awakes in their home, he's disoriented and can't remember who he is or what happened. Fearing the unknown attacker, he chooses to adventure through time as an escape, but doesn't realize the bigger dangers he's soon to face.Traveling through time provides a new beginning, allowing him to make new memories in place of the missing ones. Injustices in different eras begin to define his character, and he wavers between wanting to help others and violent impulses. His personal discoveries, the new sensations, and the exploration of time become his existence - the Rain Experience.