The Mother of Hell (played by Shaw Yin Yin) sent the devil Vinci (played by Chapman To) to the human world to compete with the angel A-Jian (played by Chan Wai Man) for "customers". Both of them set their sights on a man named Du Qifeng (played by Wong Cho Lam). Du Qifeng has a girlfriend named An Qi (played by Tong Fei) who he has been dating for many years. Unfortunately, An Qi's personality is really rough and barbaric. Du Qifeng is often beaten by her, and he is very depressed. Vinci came to Du Qifeng and promised to fulfill his three wishes in exchange for his soul, so Du Qifeng made a wish that An Qi would become sexy and hot. His wish came true, but he soon discovered that his girlfriend, besides being hot, was also flirting with other men. After that, Du Qifeng made a second wish, hoping that An Qi would become cute and lovely, but the good times did not last long. Although An Qi was innocent, her IQ also returned to the level of a child, which caused Du Qifeng a lot of trouble.