Major Mike Kessler and his Immigration and Customs Security Squad arrest a Syrian terrorist at the Toronto airport. They also detain the man seated next to him, who may be an accomplice or an innocent bystander. CSIS decides to send him to Syria. (mature subject matter)

Kessler and US Homeland Security Special Agent Bianca LaGarda intercept the smuggling of millions of dollars across the St. Lawrence River. Together, they must work with the Mohawk Police to uncover an Albanian money laundering operation at the reserve's new casino. ICS Agent Gray Jackson goes undercover as a gambler, but when a wild card from his past shows up, his luck runs out.

A Rendition aircraft goes down in the town of St. Calais in Quebec with 3 Muslim terrorists attacking a local constable and seizing his vehicle with a Military police officer as a hostage after escaping from US Military custody, forcing Mike Kessler to hunt down the 3 men with Joint Task Force Two commandos sent in to capture them.

A dangerous Belgian arms dealer arranges the theft of anti-tank weapons from a Canadian military base - and they seem to be headed stateside. As they track the weapons, Kessler and LaGarda must contend with disgruntled ex-Airborne soldiers, a criminal mastermind who's three steps ahead of them and the young truck driver caught in the middle.

Kessler bows to pressure from ex-lover and Cabinet Minister Suzanne Fleischer to arrange the release of three illegal Russian strippers. The story is leaked to the press and the Squad is exposed to ridicule. When the strippers' Russian boss turns up with a bullet in his head, Kessler unearths a conspiracy that mingles sex, blackmail and political intrique at the highest level.

Gray and Layla take down a human-trafficking operation in Vancouver, but the ring leader, Lo Hok-Yin, evades capture - with possible help from CSIS. As Slade struggles to stop a leak in ICS security, the team unearths the crime lord's grisly new business. And the bloody trail leads to an old adversary.