The
movie tells a story, partly
fictional and partly
true, about a
scientist, portraying
John Lilly and his
experiments with an
indian hallucinogenic mushroom beverage, along with an
isolation tank.
In
real life,
Lilly invented the
isolation tank, and although no
indian mushroom soup is reported to be tried with the tank, he did some experiments with
LSD and
Ketamine in it.