席林与斯科特饰演夫妻带着儿子从西雅图搬到洛杉矶,急于融入新社区的他们接受邻居詹森·舒瓦兹曼、朱迪丝·哥德雷科夫妻的邀请,前去赴宴。谁知酒酣耳热之际,聚会画风急转直下,突然变为三俗派对。Alex, Emily, and their son, RJ, are new to Los Angeles. A chance meeting at the park introduces them to the mysterious Kurt, Charlotte, and Max. A family "playdate" becomes increasingly interesting as the night goes on.