Although this is not a film trailer, (it is a book trailer) I think this is the best place for this to go. 

"Tom Trueheart must rescue his six brothers and their Princess brides from the Land of Dark Stories." 
A stunning opening scene zooms through the pine needles and falling snow to zoom in on the hero of our story, Tom.
"He has a special sword,  He has courage, He has purpose, There is only one problem, he is the size of a thumb."

Teaching ideas

• Ask the children to write the opening of the story, describing the setting before introducing Tom.
• Write and record a voice over for the trailer.  Ask children to time it, record and overlay onto the film.
  
• Write adventure stories using Tom as the hero. 
  
• Create own version of The Book of Dark stories using prompts from the clip.