Early 20th-century Europe. A world where magic exists. Guest carries the weight of their deceased parents' sins, cursed by magic so that they can barely walk and are unable to run. One day, Guest wakes up in a vast field of flowers. Under a beautiful starry sky, Guest spots a large shooting star. Suddenly, a beautiful young man named Astel appears silently behind them. "You found something just now, didn't you? That is something I need. Won't you help me find it?" With no family and no way home, Guest decides to follow Astel.

Will their curses be broken at the end of their journey...?