Phoebe's ex-singing partner Leslie plays at Central Perk. Everyone likes her except Phoebe, who reveals that the two used to sing together but broke up when Leslie went to sing for commercials. Although still mad at her, deep down, Phoebe wants to get back together with Leslie and does so halfway through the episode. Things go well now until Leslie hears Smelly Cat, which she sings to her old commercial colleagues, who loved it. Phoebe breaks up with Leslie again when the latter prefers the commercials to the duo.
Although Ross is sad that Rachel is working late again, his spirits are lifted by Mark who announces that he's quitting his job. Ross quickly becomes sad again when he learns that Rachel is still seeing Mark out of work at a fashion seminar. So as not to let Mark go with her, Ross accompanies Rachel, but dozes off halfway through the seminar.
At the coffeehouse, Chandler meets Ginger, an ex-girlfriend of Joey's. Joey freaks out when he sees her, and later explains to Phoebe and Monica how he threw her wooden leg in the fire by mistake. Chandler is interested in Ginger, but she freaks out when she finds Chandler's third nipple.