: Six months prior, Carter led an elite squad to kill terrorist leader Sheik Ibrahim Bin-Khalid. Now, followers of the slain leader are hunting down the team members to recover a "strongbox" containing codes for domestic terror cells.
: With his life and family at risk, Carter turns to the revived Counter Terrorist Unit (CTU) in Washington, D.C. for help. 24: Legacy (2016–2017)
: The former National Director of CTU who stepped down to support her husband's presidential run but is pulled back into action. : Six months prior, Carter led an elite
: A war hero struggling with civilian life who must go back into the field to prevent a massive attack. : Six months prior
: Rebecca’s husband, a powerful politician caught between his ambitions and the threat to national security.