Impossible Missions Force (IMF) agent Trevor Hanaway (Josh Holloway) is killed by assassin Sabine Moreau (Léa Seydoux) while in Budapest, Hungary to intercept a courier working for a nuclear extremist code-named \"Cobalt\". Hanaway\'s team leader, Jane Carter (Paula Patton), and newly promoted field agent, Benji Dunn (Simon Pegg), extract Ethan Hunt (Tom Cruise) and Hunt\'s source, Bogdan (Miraj Grbic), from a prison. Hunt is recruited to lead Carter and Dunn to infiltrate secret Kremlin archives and locate files identifying Cobalt. During the mission, someone broadcasts across the IMF frequency, alerting the Russians to the presence of Hunt\'s team. Although Dunn and Carter escape, a bomb destroys the Kremlin, and Russian agent Sidorov (Vladimir Mashkov) arrests Hunt, suspecting him as part of the attack.