ThebestmanatScott(Long)andKristin's(Weixler)Arizonadestinationwedding,Lumpy(Labine)isthelifeoftheparty,untilalong,indulgentnightleadstohisuntimelydeath.ForcedtocanceltheirhoneymoonandflybacktoMinneapolistoarrangeforhisfuneral,ScottandKristinmeetRamsey(Timlin)andlearnthatLumpyisn'tquitewhotheythoughthewas.