Eva Diaz, a marine biology student, has always loved the sea and the orcas that call it home. This makes her summer job a dream come true for the struggling university student. When an opportunity arises to check out her uncle's current project, a very rare specimen of cetacean, in the top-secret research facility of Ocean Land, she can't resist learning more. Except this specimen is a lot less whale and a lot more creature of myth. Mermaids shouldn't be real yet now it's her job to befriend one. Gripped by uncertainty she must choose whether to be a warden or to heed the call of the orca's serenade.