"Мне нужно краткое содержание фильма один дома всего 7-8 предложений на английском языке и на уровне 6- ого класса"

It was a Christmas Eve. McCullisters was going to France. Their relatives live there. A major came to McCullisters home. He asked all the member of a family about home. But nobody knew that he is a thief. 
Later there was a conflict between the members of the family in a house. It happened because Kevin pushed his brother.
McCullisters has already arrived to the airport. When they took off they have remembered that they their son was forgotten. 
This is how started the adventuries of little Kevin. The child has saved his family from thieves.
Получилось, конечно, больше. Но на уровень 6-го класса подойдет.