Memory is the First Thing to Go - S1.E26

The DATS team returns to the real world, only to find that Sampson and the others are missing. Chief Hashiba surrounds them and dismisses them from DATS, since Kurata lied to the government, and the memories of Marcus, Thomas, and Yoshi are erased. The Digimon are held captive in a jail cell. The rest of the team are also in cells. Marcus, Thomas, and Yoshi live a normal life, until the Digimon escape and persuade them that they used to be a team. Marcus and the others don't believe this at first, but later regain their memories. Meanwhile, Keenan and the others escape from the cells and try to destroy Kurata, but to no avail. They group together again to defeat another Gizumon that Kurata had sent to attack Marcus. Afterwards, they head over to DATS headquarters to find that it's being destroyed.