On the first day of spring, a train derails, causing numerous deaths.Two months later, rumors spread of a ghost at Nishiyuigahama Station with the power to send others back in time to the day of terrible accident.The story attracts a woman who lost her fiancé, a man who lost his father, and a boy who lost his unrequited love.A chance to go back, to see those dear to them, seems almost too good to be true.What will they do now that they have it?