The lead boy Hongxiao under the Yue Lao Seat was ordered to go down to earth and facilitate forty-nine marriages according to the marriage book.
For the first one, the fate book said "Yi Knot", but she saw that the red line on the bride-to-be's wrist was covered with black thorns. Heaven urged her to repair the engagement, but Hongxiao cut the thread in front of everyone and lost a memory.
From a controlling fiance, a lover who hides his addiction, to a partner who kidnaps his family with love, Hongxiao gradually discovers that some red lines are not fate, but ropes that strangle people. Marriage lawyer Shen Yanchuan only believes in evidence, not destiny; Hong Xiao can see everyone's threads, but only his marriage.
One is responsible for seeing the wound, and the other is responsible for guarding the choice. They worked together to dismantle the bad relationships that were written as a match made in heaven, but found that the marriage book would rewrite the records, and Hongxiao's memory also disappeared out of thin air after mission after mission. Until the evidence points to herself - she was also the one who said "yes" on behalf of others.