From the author's submission:

You play as this family who must retrieve four crowns in order to obtain the dragon slayer (a sword) and then kill that evil dragon. Each family member has it's own area in this huge game and they can use different items.

Because of this vastness, the order in which each family member is used is crucial, to prevent any unnecessary backtracking. This run of the game involves no backtracking, lots of shortcuts, and a whole lot of speed scrolls with the help of a little luck manipulation.