Tells of two groups of people stuck in a time loop where they keep returning to the beginning of a day or incident. In part one, Li Shi Qing experiences death over and over again on a bus, with each loop sending her back to the bus and back in time. To get off the bus, she accidentally dragged fellow passenger Xiao He Yun into the time loop. The two must try everything to make sure the bus gets to its destination safely to close the time loop. Unbeknownst to them, Song Bo Dao is a delivery man also stuck in a separate but connected time loop. He is tasked with finishing his deliveries for the day, but for some reason can never deliver all of them, especially a package to someone called Xiao He Yun. Along the way, he finds pets and people in need of help, and helps them over and over again every day. One of them is writer Qin Rou Rou, who is immediately taken by his story and decides to help him decipher the solution to the time loop. They begin to date and fall back in love every day as he delivers her cat food to her and re-tells her their story. Adapted from the novel "Kai Duan" (开端) by Qi Dao Jun (祈祷君).