Callen and Sam are trapped in an armed submarine that terrorists have aimed to hit an aircraft carrier in San Diego. Meanwhile, Hetty defies orders and forgoes her trip to Washington, as the team tries to locate and save Callen and Sam and prevent the terrorist attack.—Anonymous
Trapped in the Colombian drug cartel's submarine which Jihadists converted into a giant torpedo, Callen waves panicking Sam's objections and decides to pierce it and try to force the terrorists to a gun fight. Granger tries to buy time and prevent the navy from bombing the submarine till Deeks's team can work out the terror plan and hopefully prevent it otherwise.—KGF Vissers
Callen and Sam are in a sub filled with explosives. They deduce that the sub is going to be used in an attack and the ones in control of the sub are willing to die. Deeks and Kensi are working with DEA agent Del Campo to find out where the sub is going. Hetty finds out what happened and decides not to go to Washington even though Granger tells her he's got it handled.—rcs0411@yahoo.com