Lawson tries to save Caleb from a life of crime, only to discover it's already too late. Meanwhile, Dom's home life explodes when Sandrine's depression threatens to harm their baby.

Tactical Respose race into town, on the hunt for Oliver Ginsberg. They learn that Ginsberg has placed a very large bomb under the city and that he has plenty more deadly tricks in store for them. Lawson finds himself in an awkward position when he must work with Dom, now a member of the bomb squad, to defuse the bomb.