Calvin Quinn and his partners—investigative journalists Alex Digger and Mittens Meow—escape the recent stress of Bowwow for a vacation in a beautiful Hawaiian state park.

When a pod of sharks attacks helpless surfers, Calvin risks discovery and transforms right on the beach into his superhero alter ego, Power Pup.

After saving the surfers from immediate danger, Calvin and his friends uncover an organized plot to tarnish the state park's reputation. And possibly, another dastardly villain lurking in the shadowy depths.

Will Calvin summon enough courage to overcome his fear of sharks and save the day before anyone else is hurt?

And will this be the mission Mittens finally learns his superhero secret?

This is the third book Power Pup book, a funny Christian middle grade series for kids ages 9-13.