Fan fiction based on A. Green. The nineties. A young man, an employee of a small Moscow publishing house, a lover of science fiction, bard songs and sailing tourism, spends a summer vacation on the White Sea with his friends and colleagues. During one of the passages to the islands of Kandalaksha Bay, he picks up a strange man who looks like an old sailor from adventure novels. And then a chain of incredible events begins, which our hero could not even imagine, except on the pages of his favorite science fiction books, and the guiding thread among them is the light of a distant lighthouse, which is only one in all worlds...