The second tragedy has occurred. In an attempt to avoid the death of Mion Sonozaki and the disappearance of Keiichi Maebara, Rika Furude tries to redo everything using the power of the Time Jade. However, the first attempt is thwarted by the actions of Polaris, and the second attempt is blocked by the actions of the residents of Hinamizawa. With no more chances to redo things, Rika pins all her hopes on the final fragment. And who does Rika turn to for help...?