The best way to understand your campaign's performance is to view your campaign details page. However, if you're looking to dig a little deeper view a specific story's performance, click on the story library like in in the GIF below.
Your story library contains all the videos in your Goodkind workspace and attached to the videos are the stories that you've sent.
For example, in the screenshot below, the video was sent 2 times. One time to 1 contact and another time to 2 contacts.
To view more detailed stats and deliverability information for each story and each contact, click on see details.