When Adam accidentally gets Callie's car stolen, he tries to make it up to her by replacing the old car with a brand-new hybrid. In an effort to surprise Callie with a brand-new car, Adam enlists the help of Mike and Ethan to get the best deal on the car, but the hunt for the best bargain turns into a competition. Meanwhile, Mike's grown-up "little brother" from a mentor program he used to volunteer for visits Mike and Lisa and surprises them both with an unexpected book dedication, and Ethan befriends a loner car salesman