What is these difference?"I have seen the film" and "I had seen the film"

Very close brothers Once upon a time, Very close brothers lived. older brother very loved his brother and younger brother respected his brother. One day, They went long way, So When they passing bridge. "Brother, Look at this water in. What is shining?" "Well, What is it?" "Wait, I'll take it" This was gold nugget which Younger brother took in the water. "Brother, I have two gold nugget. Have you this one." "No, it's yours all." "No, You must have one it." Very close brothers shared two gold nugget and walked the road. By the way, Younger brother that was thinking threw gold nugget in the river. "NO, Brother. Why do you throw gold nugget in the river?." He asked him. and He answered him. "Brother. I always have rescpeting you. but i thought." "What did you think?" "I thougt if you aren't here I had all gold nugget. So i hate me and threw it. It's right that I threw away better than i hated you." He listened the say and threw gold nugget in the river. "You are right." Brothers that threw gold nugget in water lived very happy long long time.

Happy thing My father is kidney patient. So he has cured at hospital for a while. In result, he is very cured. He get out of the hospital tomorrow. I'll hope to my family are health in the future.