In a Cape Breton family of black sheep, Mary is pure as the driven snow. She is patient and kind with her alcoholic grandmother and volatile mother, loyal and attentive to her spoiled cousin, and pleasant and polite all day as a grocery cashier. Her well-off aunt, the only other normal person in the family, wants to help her more, but Mary's mother is too prickly and proud. So Mary goes to work, comes home, takes care of her family, and wonders if there'll ever be more to life. When a young couple moves into the apartment upstairs, it sparks a series of changes that leads to major family revelations, and Mary discovers that sometimes doing the wrong thing is the exact right thing to do.