Burgess and Roman are trapped after Burgess pursues suspicious activity without backup; the intelligence team receives their taser certifications.
When the team learn that a notorious international weapons dealer has returned to the states, Eric is forced to go undercover at a bank.
An investment banker with close ties to a Russian oligarch is murdered, and Sam goes undercover as a day trader to investigate. Callen believes he is a victim of credit card theft.
When Magnum baulks at notorious crime boss Osi Shima's request to find his missing son, Magnum learns he's been poisoned and has only eight hours to locate Shima's son to earn the antidote.
Cadmus attacks National City with a kryptonite powered villain who attempts to seriously hurt Supergirl.