An aspiring novelist on the verge of a publishing breakthrough loses his unconventional muse, a tropical fish, sending him and an unstable fisheries officer on a series of bizarre misadventures in search of the fish rumoured to hold mysterious, almost magical powers.

Scraping by in a thankless job and suffering from chronic insomnia, lonely twentysomething Sierra turns to the online world of ASMR, where she meets Kate, a streamer whose soothing voice quickly becomes her virtual companion. When the two women meet in person, they discover there’s chemistry beyond the virtual. It’s not long before Sierra becomes increasingly fixated on Kate – which only intensifies when she feels their relationship is threatened.