
Wikipedia
Phil Connors, misanthropic weatherman, goes to Punxsutawney to cover Groundhog
Day. A snow stop prevents him and his crew from leaving the town, and he has
to spend one more night there. When waking up the next morning, he slowly
notices that the events from the previous day are happening again, and finally
understands he's trapped in a time loop. He first spends his now infinite time
being annoying to other people, then going out with all the cute women around.
He then gets depressed and commits multiple time suicide, without succeeding
in leaving the time loop. One day he notices that he quite likes his colleague
Rita, but he has only one day to seduce her. After many failed attempts, he
becomes a better person, using his time to help other people (knowing in
advance what will happen to them), learning to play the piano, and becoming
known to the whole population. Finally, he manages to seduce Rita within the
day, and he finally escapes the time loop.