Coo: Tooi Umi kara Kita Coo

Yousuke Obata lives on a Fijian island with his marine-biologist father, surrounded by a sea that still has surprises in store. After a storm, he finds an astonishing survivor: a baby plesiosaur, a marine reptile believed to have vanished millions of years ago.

He names the creature Coo and begins caring for it, forming a bond that makes its survival deeply personal. But Coo attracts the attention of people whose interests are tied to nuclear testing in the region. Protecting his unusual friend draws Yousuke and his father into dangers far beyond their peaceful island home.