Claire vies to take down Stephen Canfield, a level 5 who can create black holes, but is unaware that others are close behind. Peter leaves the grisly future only to find that the experience has changed him forever. Meanwhile, Hiro befriends Daphne and Knox when Adam Monroe is unable to get them to "the formula"; Suresh's need to fix his research puts Maya in danger; and the true identity of Linderman is revealed.