After Bill befriends Dean's music teacher, Bill and Lillian attend a party at his house and the evening takes an unexpected turn. Meanwhile, with their parents away, Dean, Bruce and Kim make their own plans for the night. 

After Lillian's boss announces budget cuts, she is forced to make a decision and enforce boundaries between her personal and professional life. Meanwhile, Dean and Cory's friendship hits a few speed bumps as they work together for the boxcar derby.