Famed Pathfinder Bodriggan Wuthers disappeared from his dig site beneath the House of the Immortal Son in Taldor's gilded capital of Oppara. Once a grand temple to Aroden, the Immortal Son is now Oppara's most opulent theater. Sent to locate Wuthers, the Pathfinders must attend an opera with members of the Oppara elite in order to gain access to the secretive theater's dig site. When a cult crashes the performance and the nobility change into hideous walking dead, the Pathfinders are forced to choose between finding Wuthers or saving themselves.