Booth interrupts Brennan's romantic weekend away with Sully to aid him in investigating a crime scene where the shell of a woman's body is found, but her bones had been removed. The investigation becomes intriguing to the team who have to reconstruct her skeletal structure, but the task proves to be a difficult and gruesome one. Clues soon point to a rare ancient Asian custom that involves burying the bones of an unmarried woman with those of an unmarried man to serve as an afterlife wedding ceremony. Meanwhile, Sully has a shocking question for Brennan, one that forces her to make a decision about their future together.