Doctor William (Tom Cruise) and his wife (Nicole Kidman) attended a party held at the home of one of his clients, a local celebrity, and they happened to meet one of his college classmates, Nick, who was the pianist at the party. That night, William was out on business. After finishing his business, he met Nick again in a bar, and Nick told him about such a secret dance: at the dance, everyone was wearing evening gowns and masks, and there were naked beauties everywhere. William couldn't help being curious and begged Nick again and again, and Nick told him the address of the dance and the codeword for entry. After William hurriedly prepared, he embarked on a dreamlike adventure. The process was full of weirdness and mystery, and the mystery behind it was even more incomprehensible.