Robin and Chrissy's party is cancelled by George, which leads to a dispute. It gets so bad that Mildred finally leaves him. Can George get Mildred back?

Roper raises the rent, and the flatmates need to find a fourth roomie to help pay it off.

To please Mildred Roper, Robin goes on a dancing date with her while George decides to stay at home. However, George things something might happen between the two.

George needs some money so he sells Mildred's sun lamp to Larry, who sells it to Robin. Later, when Mildred is upstairs, she sees her lamp and thinks Robin has stolen it...

Robin's brother Norman comes to stay for two days, and he takes a shine to Chrissy...

George receives a huge gas bill and decides to open up his chimney, but it needs to be swept so he gets a gadget from Jerry to suck out the soot. Meanwhile, things have moved on considerably with Norman and Chrissy, which makes Robin jealous...

It's the day before Norman and Chrissy's wedding and Mildred is upset that she has not received an invitation...