Claiming that he doesn't know his own past, a rich man enlists an ex-con with an odd bit of detective work. Gregory Arkadin says he can't remember anything before the late 1920s, and convict Guy Van Stratten is happy to take the job of exploring his new acquaintance's life story. Guy's research turns up stunning details about his employer's past, and as his work seems linked to untimely deaths, the mystery surrounding Mr. Arkadin deepens.
A marginal group celebrates Christmas Eve singing and dancing in the street while a millionaire celebrates the feast offering a great dinner to his friends. The millionaire receives a telegram from his sister in America who announces her visit after more than twenty years without seeing each other…