The episode opens with a flashback of Desmond Hume (Henry Ian Cusick)
searching for a doctor to help his wife Penny Widmore (Sonya Walger), who
is giving birth to their son, Charlie. In 2007, Desmond and Penny arrive
in London, where Desmond plans to look for the mother of Daniel Faraday
(Jeremy Davies), who is believed to be at Oxford University. However,
there is no record of any Faraday in Oxford's database, even though Daniel
himself was a professor there. Desmond visits Daniel's old lab, where a
janitor tells him of a woman that Daniel knew. At her house, Desmond finds
that the woman is in a vegetative state after experiencing temporal
disassociation similar to what Desmond experienced on the freighter (as
seen in "The Constant"). He learns that Penny's father, Charles
Widmore (Alan Dale), is not only paying her medical expenses, but also
funded Daniel's research. Desmond confronts Widmore, who gives him the
address of Daniel's mother in Los Angeles. Desmond returns to Penny, who
agrees that they must travel to Los Angeles.
In 1954, following the events of the previous episode, "The
Lie", Juliet Burke (Elizabeth Mitchell), John Locke (Terry O'Quinn)
and James "Sawyer" Ford (Josh Holloway) interrogate the two men
they have captured. Juliet deduces that they are members of the Others
because they can speak Latin. One of the men, a younger Charles Widmore
(Tom Connolly), kills the other and flees to his campsite to warn Richard
Alpert (Nestor Carbonell). Locke later meets up with Alpert and gives him
the compass; however, Alpert is not entirely convinced. Locke tells Alpert
to visit him when he is born in 1956, but cannot convince Alpert to show
him how to leave the island before the next time jump occurs.
At the same time, the freighter team, consisting of Miles Straume (Ken
Leung), Charlotte Lewis (Rebecca Mader) and Daniel Faraday are captured by
another group of Others, led by Ellie (Alexandra Krosney). Faraday deduces
that a group of Americans have come to the island to test hydrogen bombs,
and that the Others are in possession of one which is leaking radiation.
He is able to convince Alpert to let him defuse the bomb, confessing his
love for Charlotte as proof that he won't detonate it on purpose. Ellie
leads Faraday to the bomb (the titular Jughead), and after an inspection
he advises her that the bomb should be buried and will not go off for at
least 50 years, inadvertently revealing that he is from the future. Ellie
doesn't believe him, but Juliet and Sawyer show up and disarm her. The
time jump occurs and the group is safe, but Charlotte suddenly collapses
with a bloody nose.