Rikotto, Zuzu, and Paroru are intelligent furry creatures who firmly believe that the world beyond their island is far too dangerous to venture into. Nevertheless, Rikotto and Zuzu yearn to see the world that creates the mysterious objects washing up on their shores. Following a particularly thrilling discovery, Rikotto persuades Zuzu to construct a boat, and they set sail across the sea, dragging their reluctant friend Paroru along. Initially, the trio finds the foreign land beautiful and exciting, but they are overwhelmed upon encountering a bustling city of humans. When Rikotto and Zuzu are captured by a circus ringleader who plans to put them on display, Paroru must decide which fears he is willing to confront for his friends.