Arigato and his friends to the rescue! This time, they set out on a journey to a mysterious island in search of nara seaweed, the most important ingredient in Chef Finn's special sushi. But what seemed like a quiet excursion will turn into an ad...

Arigato and his friends to the rescue! This time, they set out on a journey to a mysterious island in search of nara seaweed, the most important ingredient in Chef Finn's special sushi. But what seemed like a quiet excursion will turn into an adventure, as they soon discover that the island holds many secrets... including the existence of a fearsome dragon! Amidst legends and dangers, Arigato must once again prove that he is a true samurai. Will he overcome this new challenge?