Jack is really Jax. They are nonbinary but struggling to express it. Then, a series of letters arrive from an anonymous source that seems to know everything about them. The letters call them to a mystical place full of transformation, self-love, and community. But first, they must accept The Invite.

A family gathers on Christmas Eve for what could be the last holiday in their ancestral home. As the night wears on and tensions arise, one of the teenagers sneaks out with her friends to claim the wintry suburb for her own.