An old, ex-spy decides to use a new kind of bomb to kill the president for firing him. Lorne Cash is called back into E.C.H.O. (emergency Counter Hostilities Organization) to help stop him.
An ex-Russian spy wants Lorne dead and Shank may be forced to make it happen.
A greedy defense contractor plans to use his android 'son' to cause a war, but the plans go awry when the android develops a conscience.
A dead agent's body is stolen and his tooth removed. Part of the plans for a top secret project, codenamed Project Tempest, were hidden inside and it is up to Lorne and Max to find out what is going on.
General Welish leads a coup against the president. A hypnotized Max is lined up to assassinate the president. Meanwhile Welish also plans to set E.C.H.O and I.F.U. (Investigator Federal Unit) up against each other to keep them out of his way.
Micah is framed for treason and kicked out of ECHO. Max is promoted and becomes the new leader. Her first orders are to find out who set up Micah and clear him.
Lorne's younger brother James, a traitor and Russian Mafia member, comes back to the USA to steal half a billion dollars intended for earthquake victims in Russia.
Lorne's old psychiatrist is broken out of a mental hospital. What can he reveal about the inner feelings of Lorne?
A Militia group gets hold of the activation codes for America's nukes and plans to use them to destroy all the major cities.