The cherry blossoms are in full bloom in Washington, D.C., and the Calhouns are in the midst of hosting their annual party to celebrate the best of the spring season. With a house full of friends, neighbors, and their beloved three adult children, they expect a relaxing afternoon. They've planned the decorations, the food, the music -- everything is perfect. Until it isn't. As family tension builds and a body is discovered in the center of the party, the yearly gathering transforms from a celebration into a murder investigation -- and the Calhouns are forced to face their darkest secrets before it's too late.