Holly becomes pals with Jeff's ex-girlfriend, Dana when they both go to a U2 concert with Jeff, even though Val warned Jeff and Holly not to go with Dana, and Jeff never even wanted Holly and Dana to be friends. Meanwhile, Gary saves the life of a real-estate magnate at the concert.

Upon learning that Val has a reputation for being antisocial at work, Holly encourages her sister to mingle with her colleagues. However, an evening out becomes fodder for office gossip when Val finds herself in a compromising position with her boss Vic. Meanwhile, Jeff meets the attractive Olivia-but is shocked to find out that she is Gary's mother.