The sour grape harbours resentments for all conceivable causes. When was the scarf Lime never returned? Grudge! Orange never returned a call? Grudge! But the Sour Grape learns how unfair grudges can be when a friend harbours one against him without considering his defence. Could a whole lot of mercy and compassion be sufficient to make a sour grape sweet? With this uplifting, humorous, and endearing chapter to their #1 New York Times bestselling series, Jory John and Pete Oswald offer up another heaping meal of laughs and lessons!