The Carter Sisters, April, Belinda and June, have lived together happily in their Glasgow home until the day that April introduces her boyfriend, Scott, to her family- and Belinda falls for him! She tries hard to deny it, but eventually admits to herself that she's in love with him! Scott helps Belinda out with some difficult family problems, and she falls even deeper under his spell- whilst becoming rather reluctantly engaged to her own boyfriend, Jim. Scott and Belinda then draw closer together as they desperately try to stop Belinda's boyfriend from becoming suicidal. Just as Scott finally admits he loves Belinda, Fate strikes again. If they had felt trapped before, it's nothing to how they feel when a dramatic turn of events makes them realize where their priorities lie and who it is that they cannot live without.