大友克洋の短編コミック「SOS大東京探検隊」に大胆なアレンジを加え、続編として映画化した3Dアニメ。父親が小学生の頃に書いたノートを発見した少年が、そこに記されていた秘密の宝物を探そうと仲間たちと探検隊を結成。マンホールから地下に下りて大冒険を繰り広げる。監督の高木真司をはじめ、大友監督作「スチームボーイ」のスタッフが再び集結。伝統的なセルアニメの手法を取り入れ、従来の3Dアニメをさらに進化させた。Ryuhei Ozaki is a 5th grader who discovers a journal written by his father Shohei when he was himself a kid: "Tokyo Exploring Records,". Ryuhei informs his online friends and create his own exploration team. During the summer vacation, the three boys decide to go down a manhole into the sewers in quest of a hidden treasure indicated on the journal. Little did they know that the 'abandoned' sewers are hiding a very real treasure of the Japanese army, but also it's fierce guardian and a whole lot of weird 'undergrounders'.
展开