House and Cuddy board a flight back to the United States from Singapore, where a violent illness is spreading among passengers on the flight, putting their own lives in danger.
The members of NCIS are distressed when Gibbs is injured in a terrorist explosion while on assignment.
As the team tries to track down the terrorists behind the bombing that injured Gibbs, they learn that the terrorist group is planning another bombing of 9-11 magnitude--and that Gibbs has information about their plan.
Daniel's imprisonment has an unexpected impact on Victoria; Jack's search for Amanda becomes more desperate.
As Enterprise prepares to enter the subspace corridor that will get them to their rendezvous with Degra, they encounter a duplicate Enterprise manned by the original crew's descendants.