My Favourite Film

My favourite film is an American romantic drama film called Dirty Dancing. It was written by Eleanor Bergstaein and was directed by Emile Ardolino in 1987 and the film star are stars Patrick Swayze and Jenifer Grey.
It is set in the summer of 1963. Baby, the lead role character, is vacationing taking a vacation at a resort with her rich family. During her stay, Baby meets to a dance instructor, who teaches dance dancing at the resort. One day, while Baby's walks walking around the resort, sge meets Jonny's cousin and she helps him to carry on watermelons to the staff room. There, she finds a secret after-hours party and their "dirty dancing".
Jonny has a good friend who is pregnant and she doesn't dance in other place together and. They decide that Baby has to dance with Jonny. He must teach Baby because she is not good at dancing but every day everyday Jonny and Baby dance for lots of many hours and they became falling in love.
I won't spoil the plot by telling you what happens but I can tell you that there is a twist towards the end that will really surely surprise you and finally in the end there is a happy ending. I very much recomended this film.

Your post is mostly correct but it sounds slightly unnatural. Many of my corrections are simply changing how to convey an idea. Highlighted in teal will be the ones that are grammatically correct even without my corrections but sound unnatural.