Grace has an incredible date with Leo and they share an incredible kiss. Grace finally gives in and calls Leo, leaving a message on his machine for him to call her. Jack is horrified when he finds Kevin and Will dancing together. It turns out that Kevin is actually excited to meet his stalker, because having a stalker means his career isn't dead. Jack fingers Will as the stalker and runs. Jack brings Will stalking with him next time, and Kevin busts them. Jack is sad when he finds out being Kevin's assistant doesn't mean he gets to dance with him, it actually means he has to hunt down his stalker. Jack stalks Kevin Bacon, and then accidentally gets hired as his assistant. Karen finally gets up the nerve to break up with Lionel herself, and then Rosario comes back for round two. Karen sends Rosario to break up with Lionel for her, but Rosario is seduced by him as well. Grace pushes him away because of her promise to Will. Leo hunts Grace down at her office and continues to pursue her. Grace takes a pregnancy test and she and Will are disappointed when it comes out negative, but plan to try again in two weeks. Karen fools around with Lionel Banks and then decides to go for it and go all the way, but she gets a surprise when Stan shows up at her room instead. Grace finds Leo's card in her wallet with a request "from his horse" to call.
It turns out Will is just feeling guilty because he kissed a guy the other night at a club. Leo stops by the apartment to drop off Grace's wallet that she lost and Will gets jealous, scaring off Leo and accusing Grace of dating him. Grace runs into Leo again and he pesters her to go out with him, but she tells him she's off the market. Will and Grace make a pact to not date other people for a while. Leo takes Grace to the clinic on horseback and she is inseminated with Will's sperm. Grace is rescued by a cute and charming Jewish doctor named Leo Markus. See also: List of Will & Grace episodes No. Seth MacFarlane as Pencil Sharpener (voice).