Flashbacks reveal parts of Jake and Hawkins' pasts as well as what happened 36 hours before the bombs went off. During this time, Jake is in San Diego trying to make a living and Hawkins' mysterious past is made more complex when his association with a woman named Sarah is shown. Elsewhere, Emily's fiancé Roger leaves for Chicago on a job interview. Back in present day, Roger and Sarah arrival in Jericho raises even more questions.