Young Isabel dreams of being a super detective and takes her favorite toy—a large magnifying glass—wherever she goes. A scientist at heart, Isabel uses her magnifying glass to stop and observe, often seeing things that other children overlook whether it’s tiny mouse footprints or strange-looking bugs. When Isabel and her family take a trip to the bay at night, they see an amazing and beautiful occurrence of bioluminescence in the water. A lover of mysteries, Isabel uses her science smarts, great detective work, and her trusty magnifying glass to uncover the secret of what causes this extraordinary natural phenomenon.