Azalea is bored of finding colors in her garden, so her moms suggest a trip out to sea to go on her first scuba diving adventure. Amongst the coral, she meets a little rainbow parrot fish who has heard all about her love of color and leads her through his home, the ocean. Together they explore the colors of the ocean in the sequence of a rainbow, while learning the unfortunate effects of climate change and helping wherever she can along the way...