Life in Yolcos, a beautiful and prosperous port city in ancient Greece, is peaceful as the population is threatened by the wrath of Poseidon. A young, adventurous mouse and the cat she adopted, help, unbeknownst to them, old Jason and his Argonauts in their quest to save the city.

在古希腊美丽而繁荣的港口城市约尔科斯，人们受到波塞冬愤怒的威胁，生活却很平静。一只年轻、爱冒险的老鼠和她收养的猫，在他们不知道的情况下，帮助了老杰森和他的阿尔戈英雄们拯救城市。