It's Christmas and when someone hacks the Internet shutting it down, there's concern that it could be an attack. So everyone is called in. Gibbs decides to bring all the hackers they arrested and bring them to NCIS to help them. Gibbs puts McGee in charge and he's not sure if he's the right one. They want to help by going online but Gibbs won't let them. When the Internet goes back on they think the worst has passed but Gibbs thinks there's still more. They eventually learn one of the hackers made contact with the one they are looking for.