Grandpa Grouper has poor eyesight. A miracle happens. An ocean traveller loses his glasses into the sea, and they land on Grandpa Grouper's face. He regains his 'King of the Coral Reef' title.
He and friends are captured by a mini submarine and taken to the Blue Island Aquarium. A bully trigger fish, Calvin, knocks off Grandpa's crown and glasses. Grandpa's friends help him recover
his favorite things from in front of Harry Eel's cave. Everyone plots to escape back to the Coral Reef where they wiggle dance happily at being home.
