Dismembered remains are discovered in several mailing boxes at a dead-letter office, and the Jeffersonian team identifies the victim as an employee of a local Ship ’n’ Print, where the staff recently split the winnings of a lottery prize. The team uncovers a complicated love triangle between two married employees and the victim, and while motive points to the husband, a critical clue leads them to solve the crime definitively. Meanwhile, Booth’s grandfather breaks some unexpected news, and Special Agent Genny Shaw learns the importance of teamwork.
The team discovers the remains of a so-called "storm chaser" who seems to have died while following a tornado, but footage recorded during the storm ultimately leads them to believe he was murdered. Meanwhile, Booth becomes increasingly overprotective of Brennan both at home and in the field, and sleep-deprived Angela and Hodgins come to terms with having Angela's rock-musician father babysit their infant son.