In front of the mirror at home, illustrator Su Xiao unexpectedly meets herself from the "mirror world" - Su Wan. Su Wan informed that the two worlds were about to collide and could only be stopped by finding the "world anchor". The two exchanged identities to experience life. Su Xiao met the gentle designer Lu Ze in the mirror world, but found that Lu Ze was also one of the "world anchors". The four people join forces to protect the two worlds, and Su Xiao and Lu Ze fall in love across the mirror.
