With one person dead, Matt goes to an unlikely source for help as attacks continue. Claire finds it difficult to hide her abilities at her high school after a fellow student with a secret nearly jeopardizes her cover. Maya and Alejandro's abilities become a threat to others as they cross into Mexico. Meanwhile, Hiro, still in feudal Japan, tries to fix any damage his presence in the past may cause the future; Suresh has to track down the Haitian; and another lost hero joins an Irish gang in order to find clues to unlock his past.