Story line for my video

After looking at my favorite videos and thinking into the lyrics of my chosen song.I am wanting to create a video about two best friends aged between 8-10 as they will able to follow direction i give them when filming but young enough that it evokes emotion to what happens in the story.The audience will see them happy playing ect then one of them moves away.This is then followed by a goodbye and exchange of gifts. Years later they are grown up and see each other and pull their gifts they exchanged from their pockets.

The idea is to use two children one girl and one boy to maximise the connection with the audience.