Crotchety octogenarian Paul Jacobson returns to Hawaii for a vacation with his family and becomes involved in a series of crimes while struggling with the problems of his short-term memory loss. Paul finds a dead body in the Honolulu Ala Wai Yacht Harbor and must deal with a murder in the care home where his friends reside. He has to use all his geezer resources to solve a case involving the local drug cartel.