The narrator recounts a recurring childhood nightmare involving a mysterious, menacing figure emerging from a hidden space in their bedroom wall. This nightmare transports them to a surreal beach clearing with cabins and a central mound, where their family is taken by an unseen force. The dream evolves over time, culminating in a terrifying encounter with a creature who is revealed to be masked and mal-intended before the narrator wakes abruptly. These vivid dreams left the narrator feeling fearful and exhausted throughout adolescence.