"She had gone to the tower to save us all, and for our part, we could do nothing but wait."

This song impressed me a lot when I first saw Moulin Rouge, because they had taken a light pop song and turned it into a climactic event.

Duke has demanded that Satine have dinner with him or he will walk out on the play, so she goes. The rest of the cast, along with Christian, wait in the Moulin Rouge, some worried about whether they will get to have their Bohemian ending where love wins over all adversity, but Christian can only think about the fact that his love is with another man. The prostitute who prompted Duke's argument over the ending tells them, "Don't worry, you'll get your ending, as soon as Duke gets his end in." Naturally Christian gets angry.

The "unconscious Argentinian" tells him it was stupid to fall in love with someone who sells herself, because he can never truly trust her. He begins to tell a story about just such an occurence in Argentina, acting and dancing it out with the betrayer as he sings. At first she is only with him, but she begins to share her attention with other men, her clients, and he becomes insanely jealous.

Christian decides to go out for some air, and seeing this, Chocolat slips out the back. Meanwhile, Satine is in the tower with the Duke, and she has told him that Christian is infatuated with her, and she only indulges him because of his talent, so he will write her play. She insinuates that she will of course leave him for Duke as soon as the play is performed. He gives her an expensive-looking necklace.

They go to the window, and she sees Christian outside. Suddenly she can no longer bring herself to pretend with the Duke. He takes back the necklace, tears off her dress, and throws her onto the bed. At the same time as the Argentinian pretends to kill the prostitute, Chocolat bursts into the tower and hits Duke, knocking him cold. He then takes Satine to Christian's place, and this is when they decide to run away together.