Changing the film idea

After we got told the film would be too cliche then a new idea got brought up of maybe thinking of making the film more realistic by having something to do with the army being in it. It was decided that the film would be a boy who applied to the army and then changed his mind about going and wanted to back out, but it was too late by the time he decided, so the film would follow everything the boy was thinking, and it would show how it was thought to happen in real life, so in the end the boy would run away. It was forgotten that it was only meant to be the first three minutes of the film, so the rest of the film would be what happened to the family and what the boy did after he had ran away and what would happen to him.