Just as Will and Grace are settling into the idea of raising the baby together, Will's boyfriend Vince surprises him with an announcement that will ultimately lead Will to choose between his commitment to Grace and his relationship with Vince. Meanwhile, Karen shocks everyone when she announces that she has a sister, Gin, who was injured as a child during a game of Twister. Jack, on the other hand, is comforted by a man (guest star Josh Lucas) after a devastating discovery when his new show "The Badge" premieres.

The culmination of eight seasons ends tonight with a one-hour series finale - will Will and Grace raise a child together and find ultimate happiness? Will Jack find anyone that loves him as much as he loves himself? Will Karen find true happiness with the absence of Stan? All these questions and more will be answered as this groundbreaking series concludes eight amazing seasons.