Five kids investigate the disappearance of their friend, the leader of The Midnight Society whose fate may be tied to a mysterious curse that haunts their seaside town.

As the Midnight Society digs deeper into the mystery, they discover themselves haunted by an evil entity known as the Shadowman.

With dark forces growing stronger and the curse claiming another victim, a shattered Midnight Society prepares to fight back against the Shadowman.

Luke gets help from the beyond to uncover more supernatural secrets, and devises a bold plan to finally end the curse of the shadows.