Overlooked / Wish Upon A StarOverlooked: Simon invents a new invisibility suit, but because it is merely a prototype, he still has some work to do on it, and does not want Alvin to borrow it. Alvin, of course, borrows it anyway, only to discover that he is unable to unzip it and get himself out of it, causing him to panic at the idea of having to remain invisible for the rest of his life, and prompting Simon to figure out a way to unzip the suit and remove it from his brother.
Wish Upon A Star: While stargazing, the Chipmunks and Chipettes wish upon shooting stars, but Theodore misses them, and becomes saddened that his wish will not come true. After staging another celestial event so that Theodore can make his wish, the others try to figure out what his wish was. After a series of fulfillments that include a box of doughnuts, watching Talking Teddy as a group, hopping on pogo sticks to school, and other such activities, Alvin and Simon finally learn that Theodore's actual wish was to "ride a shooting star", before realizing that what he meant was going on a new roller coaster at the fair called Shooting Star.