Su Xiao, a beautiful shot-putting girl with strange powers, accidentally traveled into the comic "Oh, My Beloved Concubine" she was following and became the heroine Su Xiao! A series of "surprises" unfolded in front of her: Su Xiao's CP male protagonist, King Shu, was unexpectedly beaten for love by the villain's eldest sister, and Su Xiao was actually betrothed to the annoying second male lead, King Rui.

Su Xiaoyi changed Su Xiao's silly and sweet character setting and transformed into Niu Colu Su Xiao. While fighting wits and courage with the villain's sister, he also started a romantic love affair with King Rui that spanned reality and comics.

该剧讲述了身怀怪力的铅球运动美少女苏小意外穿越进了她正在追的漫画《哦，我的宠妃大人》中，一连串的“惊喜”展现在苏小面前，原漫画女主角苏潇的CP男主蜀王竟然被反派大姐苏月横刀夺爱，而苏潇被许配给了讨人厌的男二睿王，伤心之余竟然选择了自我了断。最大的“惊喜”是苏小穿越之后化身成了女主角苏潇“亡者归来”，苏小一改原女主傻白甜的性格设定，她变身钮钻禄氏·苏小，和反派大姐展开了一段反转不断的宅斗戏码。同时苏小慢慢发现了睿王这个“讨厌精”竟然藏着令人欣赏的另一面，两颗心越来越近，一段跨越现实和漫画的甜爱像夏花一般灿烂绽放。苏小和睿王一吻定情，真爱之吻将时空大门开启，面对浪漫爱情和重回现实苏小该何去何从......