"The Sour Grape holds grudges for every reason under the sun. Lime never returned a scarf they borrowed? Grudge! Orange never called back? Grudge! But when a friend holds a grudge against the Sour Grape without listening to an explanation, the Sour Grape realizes how unfair grudges can be. Could a bunch of forgiveness and compassion be enough to turn a sour grape sweet?"-- Amazon.

Twin girls Sarit and Allie have always been coached in basketball by their father, but now that their parents are divorced and he has moved away, Sarit is unhappy playing on the school team, and resentful that her sister still enjoys the game.