Housewife Avery discovers her husband Julian and best friend Chloe are plotting with his mother to fake a psychiatric report and steal her family trust. Instead of breaking down, she secretly teams up with Julian's business rival Marcus, pretending to go mad while tricking Julian into mortgaging everything into a shell account. At Julian and Chloe's lavish engagement party, Avery returns with Marcus, plays the incriminating recording, and exposes the contract loophole. Julian ends up bankrupt and jailed, while Avery rises as New York's true social queen.
