This is my latest idea - please tell me what you think and wheater i should write it or not

the plot would be that there is an ordinary boy in our world doing his paperround (the boy is also obsessed with the HTTYD film - he has the dvd and soundtrak and watches them daily beofre he goes to sleep) and suddenly, hiccup and Toothless appear in front of him, and he helps them ajust to a world with our technology and helps get them home

Space and time – there are so many unknowns but humans have managed to make sense out of some of it. Part of that knowledge is that there are billions of dimensions, so many it would be impossible to count and every single possible reality has its own dimension. There's a dimension where that cool kid at school got bullied, one where humans never existed, but more importantly, there is our dimension and one for the world we know as 'How to Train Your Dragon'.

In this world, the story we know that was made by the DreamWorks film company is a real life for the people in it, as real as the life you and I have, but what if these two dimensions were to cross, sending the real lives of the people in one world into a reality where they were nothing but a fantasy?

Thanks

review with thoughts please!