Anderton steals a water-living pre-cog who splashes warnings at
him of danger. He
dries her off (so not to ruin his car) and they escape.
(He steals her because he has found out that a Minority Report (a
report which is produced when not all three pre-cogs agree on 'seeing'
a future crime) is saved in her... thus the system is flawed...)
fails to commit the murder he is predicted to have committed - that
of his son's apparent murderer. It turns out that the man set up
to kill his son, had been promised that he would be killed by Anderton
so that his family can get money. Anderton had been set up... and,
worse, it appears that the pre-cogs want to tell you what you want
to hear... (note the emotional scene where the pre-cog tells what
happened to their son...)
the pre-cog in the system, it all breaks down of course, not a good
sign with it going national soon...
end is complicated, but essentially the director of the system is
covering up a murder he committed of the mother of one of the pre-cogs...