Reliving the same day, two people who are imprisoned in a time-loop vow to save their beloved from a deadly fate.

Duan Fei is a Special Forces agent who marries Yun Shi Tong, yet their marriage is only a cover to better protect Shi Tong from the assassination...

Yin Qin Rou is a 21st century woman who gets thrown into the past and lands on a prince (literally). Suspicious of her origins, the prince, Xie Yan...