Watashi, Seitarou Higuchi, Akashi, Ozu, and Ryouko Hanuki share various stories about a submarine that can travel through land, each one trying to outdo the others in terms of creativity. Ranging from a journey to stop the melting of the ice caps, to a quest to stop perverts from spying on girls, and to a fishing trip, no topic is off-limits. [Written by MAL Rewrite]

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