When Colonel Casey’s former team returns looking for him, Chuck must decide what he’s willing to sacrifice in order to find his mom. Elsewhere, Morgan works up the nerve to reveal a potentially dangerous secret to Casey.
Chuck and Sarah work on their relationship as they accompany Ellie and Devon to Costa Gravas to meet Generalissimo Alejandro Goya who finds himself in a dangerous situation once again. Casey has to contend with Morgan's interest in his daughter.
Chuck and Sarah's rivals Hugo Panzer and Heather Chandler return bringing plenty of trouble and hints about Chuck's mom. Meanwhile, while Morgan prepares the Buy More for a huge video game release, he gets a surprise from Big Mike.