Uriel, un retraído adolescente, se adentra en la selva hacia una laguna virgen en la que habita una intrigante y siniestra sirena. Tras este inquietante encuentro, su creciente obsesión lo arrastra a explorar su sexualidad y otras facetas de la relación con su hermana.

Uriel, a withdrawn teenager, enters the jungle into a pristine lagoon where an intriguing and sinister mermaid lives. After this disturbing encounter, his growing obsession leads him to explore his sexuality and other facets of his relationship with his sister.