A couple on holiday on a remote South Pacific island awaken one morning with a hang over and no recollection of what transpired. When playing back a video of the previous night, they see they participated in a local ritual that somehow ends with him murdering her.
The summer film centers around a vacationing couple in a small Swedishvillage. The trip starts out slightly idyllic as main character Dani, played by Florence Pugh, becomes acquainted with the town. But as her time lingers she becomes increasingly more suspicious of their neighbors as its cult-like tendencies become apparent.