What a Gem / Family Spirit.What a Gem: Alvin's imagination runs wild again and he starts believing his neighbor, the elderly Ms. Croner, to be a jewel thief. Because of his broken leg, he has to resort to complicated tricks to investigate (including manipulating his brothers) but they ultimately discover that she is cheating to win a gardening competition. The next day Alvin goes to Ms. Croner's house and he gives her a rose bush to show that he is sorry for accusing her of being a jewel thief and that he found a gem that actually belonged to her mother's wedding ring. To make it up to her, the Seville family takes Ms. Croner out and Alvin offers her the money from the skateboarding competition that he wins at the end of the episode.
Family Spirit: Both Alvin and Dave want to go see a soccer game the next Saturday, but that same day is their "Family Day", which commemorates the first meeting of Dave with the Chipmunks, so they both pretend that they would rather go to their Family Day trip instead. However, Alvin's soccer fever gets the best of him and he tries various plans not to attend the trip. In the end, Alvin confesses his actions to Dave, who reveals that he actually wants to go see the game too, so the whole family decides to postpone the trip.