New Year’s Eve Party

It’s a new year! Let’s celebrate with the writing prompt below:

You and your friends go to a new retro club for New Year’s Eve. You dance the night away with a dashing man in a fedora, and one of your friends learns the jitterbug from an admirer. The countdown to midnight begins, and just as you lean over to kiss your handsome partner, everyone in the club disappears except for you and your friends. What happened?