Sister Act is about a Reno lounge singer named Deloris Van Carter who witnesses her mobster boyfriend killing an employer. She is then hidden in a convent under a witness protection program. She soon makes friends with the nuns especially Sister Mary Robert, Sister Mary Lazuras and Sister Mary Patrick. After the Mother Superior catches Deloris going out to a bar in the night time followed by Mary Robert and Mary Patrick she orders her to join the church choir. Only to find her coaching the choir and turning them into swingin' singin' sisters. The choir proves to be a big success with the surrounding neighborhood, but will Deloris' boyfriend track her down?
She re-invents the choir and has them singing secular songs, but rather than aiming at a boyfriend, their focus is on God. I love this song anyway, but it is also a shows this change in theme brilliantly -
The finale of the film - Delores no longer needs to hide the fact she is not a nun, but she still has one more concert to do -