Four years ago, Nick (Adam Sandler) and Audrey (Jennifer Aniston) solved a bizarre murder case for the first time in their lives. Now they are fully committed to the private detective business, but their business has not improved. When they are invited to attend the wedding of an Indian prince's friend (Adeel Akhtar) on a private island, trouble strikes again: the groom becomes a hostage before the celebration begins, and the glamorous guests, relatives and friends, and even the bride herself, are all suspects. Although this case is full of dangers, Nick and Audrey may be able to revive the detective agency and fulfill their long-cherished wish to travel to the city of flowers.