电影《把哥哥退货可以吗》故事叙述了废柴哥哥查(Sunny饰)跟模范生妹妹珍(Yaya饰)从小争斗到大,但又鲁又废的他在优秀的妹妹面前任何事都占不了上风,唯有恶搞妹妹为乐,尤其是在妹妹谈恋爱时,常摆出兄长的架子来逞威风。而这次珍努力发展与日泰混血帅哥小饼(尼坤 饰)的恋情,但查却因不满妹妹的选择,决定要出招来恶搞这对小情人!势死保卫爱情的珍又该如何接招!Jane lives with her brother Chut with her being the only one doing everything around the house. But Chut will need to learn to take care of himself when Jane is about to get married and move to Japan