Level three Eames' dream within Arthur's dream within Yusuf's dream

(in limbo) zzz Saito Tourist

zzz Cobb Extractor

zzz Eames Forger

(in limbo) zzz Fischer Mark

zzz Ariadne Architect

zzz Mal (Projection)

Cobb tells Fischer to break into a fortress to find his father's will.

Saito dies from his wounds and falls into limbo (as does anyone who dies in a dream under such a heavy sedative).

Cobb's subconscious projection of his dead wife Mal shoots and kills Fischer before he can reach the safe, pushing him into limbo too. More on Mal later.

Cobb and Ariadne use the sedative to follow Fischer into limbo. 3 levels is as deep as you can go without falling into limbo.

The next level down is a shared dream state called Limbo, it hasn't been designed and there is no dreamer, but it is filled by Cobb's subconscious as he's been there before.

Fischer finds the Will and his projection of his father tells him he is disappointed that Fischer tried to be like him. He wants him to be his own person.

Eames sets off explosives to collapse the fort in Level three, creating a free-falling sensation called a 'Kick'. If your body experiences a kick whilst asleep, you wake up.