On leave in a shore side town, Johnny becomes interested in a young dark haired woman. They meet and he learns that she plays a mermaid in the local carnival. After strange occurrences, Johnny begins to believe that she may actually be a real mermaid that habitually kills during the cycle of the full moon.
When Will Ferrell finds out his close friend of 30 years is coming out as a trans woman, the two decide to embark on a cross-country road trip to process this new stage of their relationship in an intimate portrait of friendship, transition, and America.
Isolated on the fringes of a soulless metropolis, Catherine survives on scraps of translation work. But a mysterious client offers a lucrative job, and an opportunity for Catherine to indulge in her malformed and incompatible desires.