On a remote island in the Atlantic, a newly assigned lighthouse keeper, Gruner, struggles to adapt to the solitude and desolation of his new home. With the company of a strange yet enigmatic companion, a naturalist named Friend, his life takes an unexpected turn when they discover that the place harbors a dark secret: humanoid sea creatures that emerge every night. These beings, with a grotesque yet fascinating appearance, are drawn to the light of the lighthouse, and soon become a threat to human life.
As the nights grow darker and the attacks intensify, Gruner and Friend are thrust into a desperate struggle for survival. The atmosphere becomes thick and oppressive, and the tension between the protagonists is palpable, revealing their diametrically opposed approaches to these creatures. Gruner, who clings to his brutality and pragmatism, views the beings as mere enemies, while Friend exhibits an almost romantic curiosity towards them, leading to conflict between the two.
Horror and beauty are intertwined in this story, where isolation and the struggle for survival force the characters to confront not only the creatures but also their own internal demons. This unsettling narrative becomes an exploration of humanity and the connection with the unknown, leaving the audience questioning where barbarism ends and salvation begins.