The entire plot of "City Lights" builds towards its final, revelatory scene. The Tramp, after a series of misadventures, finally secures $1000 from the drunken millionaire for the Blind Girl's sight-restoring surgery. However, just after he gives her the money, the millionaire sobers up and cannot remember giving it to him. Two robbers had broken in, and The Tramp is wrongly accused of theft and sent to prison. The key twist is his noble sacrifice; he tells the girl he is "going away for a while" but allows himself to be captured so she can have the money and her sight.
Months later, a haggard Tramp is released from jail. He wanders the streets, more downtrodden than ever. He happens upon a flourishing flower shop and sees the girl inside, her sight now restored. She is beautiful and successful, always looking hopefully at wealthy customers, searching for her imagined benefactor. The ultimate reveal occurs when she spots the pathetic Tramp outside and, taking pity on him, offers him a coin and a fresh flower. As she presses them into his hand, her sense of touch triggers a jolt of recognition. She traces his hand, his arm, his shabby clothes, and finally looks into his face. The intertitle reads her whispered question: "You?" The Tramp, in a masterful close-up of conflicting emotions, can only nod and ask, "You can see now?" She tearfully replies, "Yes, I can see now." The hidden meaning that becomes clear is that his greatest fear and greatest hope have converged: she now sees him for the poor man he is, but her expression suggests an acceptance and love that transcends appearance, realizing the depth of his sacrifice.