Grace (Debra Messing) is enlisted by Malcolm (guest star Alec Baldwin) to help him win back Karen's (Megan Mullally) affections. Will's (Eric McCormack) flirtation with his co-worker, Paul (guest star Barrett Foa), takes a turn when details about Paul's home life put Will in an ethical dilemma. And Jack's (Sean Hayes) run-in with Zusanna (guest star Andrea Martin), the sister of his former acting teacher, reignites Jack's passion for performing.