The complete first series of the real-time suspense drama series that takes place hour-by-hour over the course of one day. Jack Bauer (Kiefer Sutherland), an agent for the CIA's Counter Terrorist Unti (CTU), is trying to prevent the assassination of frontrunning Democrat candidate Senator David Palmer (Dennis Haysbert), after the CTU receives a death threat against him. However, a traitor amongst Jack's colleagues manages to hamper his progress, and Jack finds that he has been framed for the assassination himself. He flees the CIA agents on his tail in a desperate attempt to find the real perpetrators, led by Ira Gaines (Michael Massee). Injured, and armed with nothing except his mobile phone and the help of trusted colleague Nina Myers (Sarah Clarke), Jack's situation becomes increasingly precarious. Meanwhile, his teenage daughter Kim (Elisha Cuthbert) has gone missing after sneaking out of the house with her friend Janet (Jacqui Maxwell), and Jack's ex-wife Terri (Leslie Hope) unwittingly puts herself in grave danger when she goes looking for her.