Lin Xia, a barista at a late-night cafe, discovered that her watch always stopped at three in the morning. When she repeated this strange rainy night for the seventh time, she met a stranger named Shen Shen who was soaked all over. In his pocket was the old key of her missing lover three years ago. When Shen Mo handed over a yellowed note that said "Save him in the blue car", Lin Xia was shocked to realize that she was trapped in the folds of time: every cycle of reincarnation was a countdown to her lover's death in a car accident.
While pursuing clues, the two constantly encounter tampered memory fragments and backward street scenes, and the stasis watch on Shen Shen's wrist that is exactly the same as hers hints at a deeper entanglement in time and space. When the blue subway finally emerged in the heavy rain, Lin Xia had to make a choice - to tear up the cycle and save her lover, or to accept the eternal cage woven by fate.
This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.