Marshall家族长女Summer Marshall与男友Ethan Gordon私奔。三个哥哥寻找三年后找到Summer，想带她回家族。Summer拒绝，称Ethan Gordon要向她求婚。Summer赶到订婚现场，发现Ethan已和Luna Marshall出轨。Summer质问Ethan背叛，得知出轨对象Luna Marshall竟是...
