The broad-minded Baumgartners are ready to open their arms -- and their marriage -- once again.
While Ronnie, their former flirtatious babysitter, is exploring her newfound naughty nature with her lover, Gretchen, Doc and Mrs. B have their sights set on old friends, Daphne and Ari Wilson.
Things really heat up when Ronnie and Gretchen take on an adventurous new roommate -- and her boyfriend, too.
Everyone seems to be having a rousing good time -- until romance sparks between Ronnie and her handsome personal trainer, Vince, and she needs to decide -- does she really share all that well with others?