Flip-flops (Jackie Chan) are extraordinary, but they are addicted to gambling all day long and have no goal in life, so they break into the thief's den with the chartered woman (Xu Guanwen) and octopus (Louis Koo) and commit crimes furtively. After the only grandson of the city's richest woman (Yu Anan) was born, the chartered woman couldn't stand the temptation of money and promised to steal the baby to gangsters to prove that BB was the child of his dead son and ex-girlfriend. After successfully stealing the child, a series of events made flip-flops and octopus change their concepts of life. Flip-flops began to care about their families. Octopus also saw the difficulties of his wife (Charlene Choi) and began to turn over a new leaf. Under the threat of charterers and black snobs, they still have to hand over the stolen BB.