Immortal Fairy Yun Mu, born a cat demon, descends to the mortal realm for her first trial, staying with the mortal Rong Xu for ten years. Returning from her trial, she remains deeply wounded by heartbreak and unable to let go. Urged by her friend Ling Wei to peek at Divine Lord Rong Yan, she accidentally falls into the immortal mansion and is caught by his outstretched hand, the familiar warmth of his palm leaving her heart unsettled. At the welcome banquet, Rong Yan's veil is blown off by the wind, and Yun Mu is shocked to discover that he is her mortal husband. Facing Yun Mu's intentional estrangement due to her predestined marriage engagement with Mo Ze, Rong Yan reveals the truth about the Stone of Three Lifetimes mixing up the lovers, forcibly transfers the marriage mark, and bears the heavenly thunder punishment alone. The two untie their identity knots, resolve their jealous misunderstandings, and finally break through the shackles of heavenly decree to stay together.