Lana's residual lust for Archer prompts Malory to promote Cyril to field agent. Archer then trains his new competition as only he can, whilst Malory frets over her own past and her son's future.
Malory's career is threatened when a sensitive videotape falls into the hands of a rogue (and roguish) Cuban agent, so she calls on Archer's expertise in seduction to turn the tables on her blackmailer.
Archer must rescue Lana from the clutches of Skorpio, the infamous arms dealer. Meanwhile, Cyril fears not only for his girlfriend's life, but her succumbing to the seductive nature of Archer's heroics.
When a bomb threat jeopardizes the maiden voyage of the luxury airship Excelsior, Archer and the ISIS crew must battle the clock (and each other) to avert disaster.
After ISIS loses yet another lucrative contract to rival agency ODIN, Malory assigns Archer and Lana to embarrass ODIN by stealing a priceless diamond from their biggest client.
Archersaurus (a C.G. dinosaur) is seen in the supposed first-take of the show, starring said Raptor as a screeching, growling, snarling Raptor on the prowl to fix his expense account by staging a "Mole Hunt" - the search for a spy in their ranks.