Chrissy gets lice, and Jason, Ben, Mike and Luke have to clean house while Maggie and Carol are away.
Ben takes karate lessons to deal with a school bully.
Luke runs into an old friend, Barney, the only honest three-card monte player. The Seavers invite him to Luke's birthday party, where Luke realizes his old pal is only pretending to be honest.
A blackout traps Carol, Dwight, Kate, and Mike in Dwight's loft amidst the ruins of their banquet. It also ruins Jason's surprise for Maggie.
Ben wants to take a college entrance exam, and gets mad when he hears his dad make a disparaging remark about his intelligence. Carol's feelings for Dwight take a blow when she meets the young girl living at his place.