Taking into account many of the critiques I got over the last week I refined the story a bit. The previs is still fairly rough but is sufficient to show the shots in sequence.
I received a lot of good advice over the week but ultimately I decided to keep the actions simple. My weakest part is my character animation so I decided to minimize that aspect without ruining the story. The biggest change was keeping the character on the initial part of the dock after he releases the shadow army instead of returning to the end of the dock and continuing to fish. Instead he watches as another villager runs by in fear from a shadow monster. This is what prompts him to kick the box off the dock. The end closes with the fisherman looking at the "no fishing" sign that was just revealed by the shockwave of a big explosion.
I had received some good feedback about modifying the story so that the fisherman was unaware the whole time of what he unwittingly unleashed upon the world. However, upon reflection on how long I would need to complete the character animation I soon realized that it was not within the scope of this term.