Arthur Fleck works as a clown and is an aspiring stand-up comic. He has mental health issues, part of which involves uncontrollable laughter. Times are tough and, due to his issues and occupation, Arthur has an even worse time than most. Over time these issues bear down on him, shaping his actions, making him ultimately take on the persona he is more known as...Joker.

This movie is a musical biography of the Four Seasons, the rise, the tough times and personal clashes, and the ultimate triumph of a group of friends whose music became symbolic of a generation. Far from a mere tribute concert (though it does include numbers from the popular Four Seasons songbook), this movie gets to the heart of the relationships at the center of the group, with a special focus on frontman Frankie Valli (John Lloyd Young), the small kid with the big falsetto. In addition to...