With toast in her mouth and a backpack in hand, a pink-haired girl rushes out of her house in a hurry. However, a single misstep sends her flying across town—back to her starting point—and she discovers that day has turned into night. Unfazed, she continues her sprint, only to repeat the same scenario. This time, though, she unexpectedly transfers to a vastly different world. Trapped in an endless loop across space and time, the girl calmly navigates through new worlds, each more outlandish and vivid than the last.