Corporate espionage. Cobb can invade people's dreams, so corporations hire him to steal business secrets from rivals' subconscious. Saito, an energy magnate, wants Cobb to do the reverse: not take information, but plant an idea in a rival's mind. In return, he'll fix problems with the US government so Cobb can return to his children. Cobb takes the near-impossible job, planning three layers of dreams within dreams for the mark. It requires a larger team taking a powerful sedative: if something goes awry, the dreamers may not awake. Cobb doesn't tell his team that his past nurtures feelings powerful enough to bring on this comatose state for all of them. And the children - are they real?