This documentary covers the life of Siddhartha Gautama, a young prince from India who went out to find the reason for "Dukkha" [problems] of human life. He later found the reason of Dukkha and teached a way to live life. He was later known as the Buddha, the founder of "Buddhism".
Do not believe in something because you are told to.
Do not believe in something because a holy person said it.
Do not believe in something because you read it from a book.
Follow and practice the teaching without prejudice.
If it brings happiness to you and others and does not
encourage self harm or harm to others then follow it.