"Help!! What the hell is going on!? Me, I've become smaller?!" Chen He, an ordinary 17-year-old high school student, woke up and found his childhood sweetheart Yuan Xiaohui appeared on his bed in the form of a 12cm tall boy. A sporty girl vs. A dull straight man. The cohabitation life with a 158cm difference began in chaos! The simple daily life becomes crisis step by step. Chen He vows to find a way to return Xiaohui to normal, but will the road to becoming big be so simple?
