Sem aviso prévio, milhões de misteriosas "portas" alienígenas aparecem subitamente em todo o mundo. Com a pressa de determinar a razão da sua chegada, a humanidade deve trabalhar em conjunto para compreender o propósito destas anomalias.

Josh, a classical piano student focused on winning the biggest competition of his life, encounters Charlotte, a free-spirited jazz pianist who distracts him to better her chances of winning. She lures him away from the practice room for a magical night and ends up teaching Josh that life, like his music, is about taking risks.