Whoopi Goldberg return as feisty lounge singer Deloris Van Cartier in this hilarious encore to the runaway smash hit, Sister act. Thisa time around, the twist 'n' shout sisters of St. Catherine's are in over their heads trying to run an inner city school full of rowdy teenagers. Their prayers are answered when Deloris agrees to go in undercover as the shcool's new music teacher. Once again, sister Mary Clarence finds herself dodging dogma and rockin' religion as she tries to convert her "class from hell" into a hip-hop gospel chair from heaven.

Inferiorgangster Flying Dragon (Chin Ka Lok), has a bad habit of gambling, he thus offends the three great gamble deceivers. Luckily his younger cousin, Roy (Jordon Chan), who comes back from America is extraordinarily lucky, he can win every round of the game and saves Flying Dragon. Flying Gragon hence brings Roy to Mahjong casino to earm money for him. Roy observes the rivalry between two Mahjong geniuses Hua San Yuan (Yuen Wah) and Ge He Qing (Eric Kok) by chance, he witnesses the fate of them - one turns to be insane and one becomes bankrupt, and decides not to snatch the reputation of "The King of Mahjong". Though Roy has no desire to sieze the fame, his good luck elicits the worry of aggressive Mie Luo (Pang Jin Chi) who plans to ham Roy....