A couple's ailing marriage is put to the test when they are held hostage in an isolated vacation rental by an unseen Voice that commands their every move.

When Ana Rue transfers to a prestigious new acting school, she encounters a malevolent spirit after participating in a viral challenge.

　　20年前，小镇上一所高中在戏剧表演时发生意外，主角无辜命丧舞台。20年后，同校的师弟师妹为纪念惨剧发生20周年，决定重新编排当年未能圆满谢幕的舞台剧，没想到骇人的事情发生了……