Shelly the oyster is very shy, and afraid to open her shell around other sea creatures. She often watches as her aquatic neighbors play games together, but never has the courage to introduce herself. One day, the outgoing and caring Luna Lobster decides to help Shelly come out of her shell and overcome her fears. Will Shelly learn to be brave like Luna and share herself with the world? Or will she keep her shell closed tight forever? Many ocean surprises...