Kujirai Taichi has been selected to be the leader of the staff at the Taiji Municipal Whale Museum. Despite enlisting the aid of Shiraishi Yui who came from a Tokyo aquarium, and the museum curator Mashiba Nozomi, Taichi and the staff are perplexed by the low turnout of visitors. Then Taichi hits upon the idea to hold a staff created "whale festival" in order to generate hype for the museum. One day however, the "whale festival" is in danger of being cancelled as the opening quickly approaches.

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