 The characters of the "Five Lucky Stars" were originally petty criminals recently out of prison, who started their own cleaning company.By the second film, the cleaning company idea was discarded, and the bumbling gang were instead employed to assist the police.The first three films were the most successful, directed by and starring Sammo Hung as one of the gang of "Lucky Stars", and featuring supporting roles and cameos from a variety of Hong Kong film stars, notably his Peking Opera School "brothers", Jackie Chan and Yuen Biao, as well as stars such as Andy Lau, Michelle Yeoh and Rosamund Kwan.