This episode highlights the sweet, often overbearing friendship between Will and Grace, as well as the eccentric dynamics of the core group when forced to keep secrets.

Despite Will's best efforts to keep them apart, Grace accidentally bumps into Leo. Realizing Will has put so much effort into the surprise, she and Leo decide to pretend they haven't seen each other to keep Will's "surprise" intact.

In the Will & Grace episode (Season 5, Episode 20), the plot centers on a comedy of errors involving a surprise birthday guest and a secret that everyone—except the person supposed to be surprised—knows. Plot Summary

Will (Eric McCormack) tries to surprise Grace (Debra Messing) for her birthday by flying her husband, Leo (Harry Connick Jr.), back from his Doctors Without Borders assignment in Africa.