This impacts the storyline because it was what let Bilbo and the dwarves escape from the trolls’ shelter. Tolkien intended for this part to be humorous because Gandalf tricked the trolls and made them argue until sunlight shone upon them and they died. In the movie, Gandalf used his magic staff/Jesus stick to crack a big boulder in half while the trolls decided how to eat Bilbo and the dwarves, revealing sunshine and killing the trolls. This version of the dwarves’ salvation is more effective because it was easier to understand and it worked better with the story rather than the book version.
