After her mother's death, thirteen-year-old Opal moves to her uncle's farm where she befriends a group of orphaned, music-loving bats, and summons the courage to protect them from a mining company as she attempts to find them a new home.

It is Bub the pug's first trip to the beach, and Bella wants to enter him in a pet-surfing contest, but Bub is scared of the ocean and refuses, so he hopes to make it up to Bella by presenting her with the treasure at the end of the map he found.