In 2048, Cao Xiaoming devoted his life's work to creating a robot named Xia Xia and sent her back in time to 2018. Plagued by constant misfortunes and loneliness, Cao’s life takes a sudden turn on his 22nd birthday when he meets the girl who changes everything. Xia Xia’s arrival throws Cao’s world into chaos—her naive, clueless, yet endearing personality leaves him utterly defeated. With a youthful heart overflowing with emotions, Cao decides to shelter her and help her find her family. As they spend time together, Cao gradually develops feelings for her. However, when Xia Xia’s true identity is revealed, he is left bewildered...