Out with the Old, In with the New

When Stevie's mom brings home her new and much younger boyfriend, Stevie accepts an awkward invitation to join him for a more private meeting. Nikki suspects that he may be interested in more than friendship and convinces Sophia to spy on them. Meanwhile, Nikki enlists the gang's help in throwing a garage sale, but Professor Oglevee initially refuses to get involved until he realizes that there is money to be made.