Jessica (Tilda Swinton) is awakened in the middle of the night by an inexplicably loud, banging thud––”a rumble from the core of the earth” as she later describes it. The premise is apparently autobiographical: Apichatpong has himself suffered from what is called exploding head syndrome, but needless to say the film has little interest in the phenomenon's medical dimension, instead using it as a starting point to pursue more esoteric ends.
We eventually learn that Jessica is a Scottish orchid…