Frasier and Niles enter a furniture store looking for a chair for Frasier's new office when he returns to private practice.
While shopping they run into their old babysitter Ronee Lawrence, and we finally find out why Niles is always wiping off things.
Frasier invites her over to get caught up, with hops of starting a romantic relationship, but what he doesn't suspect is for Martin to start working his charm.
So throughout the night both Frasier and Martin compete for Ronee's attention, and when she is called off to work, they both go down there to have her choose one of them.
Ronee is a great character, and its good that she wasn't a one time character, but became a recurring one.