Someone has identified Marko as IDF, will be able to talk his way out of this or will Ursula run? What will Kate learn from her meeting with Homeland and her new assignment? Lenora and Simon return to the Mercury from the hospital and Lenora goes to the brig to confront Lyster.

The Houston crew meets to say goodbye then transports to Marten State. There Mr. Pearman gives them their future assignments. Hanaka and his guard receive a visit from Agent Slane. They learn that they're getting a new cell mate. Will there be a power struggle. Ursula is spotted going into a bar. Marko portrays himself as a doctor and goes in to confront her in hopes of getting hired.

The Houston crew gets together to discuss going forward on the Corsky case. Barnes and Thornton along with Scarlett investigate the Assignment Officers at the Pentagon. Gabby, JoMac, Marko and the Doctor stake out a restaurant that they suspect Ursula will visit.

Things are heating up in San Antonio and Houston as the IDF teams are in position to try and stop the attack on major internet hubs. The Mercury must deal with an attack meant to free Hanaka and his guard, while Gabby, JoMac and Marko search the city for information of the hidden hospital, Everyone finally joins us at the hidden hospital where Lyster is. Will their attack be successful? What shocker awaits a certain crew member? Listen and find out in the 10 season ender "A Call To Action".

Gabby, JoMac, and Marko land on Titan Four to begin their canvassing of Titan City. Lyster, Ursula and the Doctor arrive at the hidden medical facility inside a mountain. Scarlett and Sam get set up to observe the attack on a San Antonio internet hub. The Mercury crew lands on Titan Four in a storm of chaos.

Scarlett moves to San Antonio to assist Sam per Pearman’s instructions. The team in Houston is in place and preparing to jam any transmission attempt from Bishop’s crew. Gabby, JoMac and Marko are tracking the Mercury’s shuttle beacon while on board the Mercury, Hanaka and his guard make plans.

Hanaka and his guard tell Slane that RAGE knows about hidden locators on IDF ships. Is the Mercury now chasing a ghost? Tracy and her crew in Houston make final preparations to stop the RAGE attack on Houston's internet presence. She confers with Sam on last minute information. Lyster and Ursula discuss plans with the doctor who is demanding more personnel support for the operation. Barnes and Pearman confer and offer Scarlett the opportunity for field work. Gabby, JoMac and Marko find the locator and trouble!

The Mercury continues it's pursuit of Lyster and Ursula. One of the IDF crewman regains consciousness long enough to talk with Agent Simon. Sam calls Bishop for last minute details, while Scarlett wonders if Bishop's mission is a diversion to something bigger. Kate's crew gets electronic jamming equipment and spot something very unusual at one of the target sites. Hanaka and the Guard have a secret they share with Slane about the tracker.

Gabby, JoMac and Marko frantically try to disarm the bomb on their shuttle left by Lyster. One of the IDF crewmen is awake and talks to Tam. Barnes' crew has no luck in finding who this mysterious wife of O'Barsky is. Bishop lays out some last minute instructions to Sam Kate relays that info to Barnes, only to face a big surprise at the end.

The crew must make repairs on their retrieved shuttle that was stolen by Lyster and Ursula. They also must tend to and learn the identity of the two crewmen they found on board. Bishop takes Sam to the spot that he wants him to observe the diversionary target in San Antonio. Barnes and company discover more information on the mysterious O'Barsky.