From the show:

It’s self-made billionaire Richard Killingworth's daughter’s big day! The last person he wants to see is his estranged wife Mavis—the woman who put the “ex” in “exes.” Celebrating with his best friend Dick, who happens to be Mavis’ first husband, Richard’s life turns upside down when the Queen of Chaos drops in, unannounced, with her new fiancé in tow. Throw in a sharp-tongued butler (um, house manager), a champagne-soaked bridezilla and a snarky stepson, and you have the perfect storm of pandemonium—the fun kind—in this comedy with a heart, reminding us why marriage and divorce make for the strangest of bedfellows.