From NetFlix:

After learning that his mercurial ex-girlfriend, Clementine Kruczynski (Kate Winslet), has undergone an experimental medical process to purge all memories of him, mild-mannered Joel Barish (Jim Carrey) opts for the same procedure. But during the operation, he decides he doesn’t want to lose what’s left of their relationship and tries to conceal her image in his memory cells. This quirky romantic comedy won an Oscar for Best Original Screenplay.

Once again a film that probably only Jim Carrey could, or even would want to, carry out. Belonging to the tradition of “figure this out if you are able”, most of the film features Carrey and Winslet wandering frantically from memory to memory while he tries to preserve his memory of her even while he lies asleep with his head in a helmet that is erasing such memories.

Don’t say I did not warn you!