An unaired thirteenth episode of Soushin Shoujo Matoi included with the second BD box set.

A sea otter and his friends, a raccoon and squirrel, live and play together in the forest.

Crafty Gecko and General Tiger attack the Goat Village with plans to build an amusement park. Even worse, they intend to turn the castle of Wolfie (Grey Wolf) and his wife, Wolnie (Red Wolf) into a public toilet! To save their captured families from the fierce animal gang and robot soldiers, Weslie (Pleasant Goat) and Wolfie must work together to find the legendary statues that protected their ancestors. Can they beat the villains and become friends?

Yuuta was 12-year-old boy, who had lost his father in the traffic accident one year ago. In the summer vacation, he visited a deserted dam deep in the mountains, where he had a good time with his father before. Suddenly a thunder storm occurred and he slipped on the ground. He lost consciousness and woke up to find a girl and an unfamiliar village. He time-traveled 30 years and reached a village, which sank at the bottom of the dam. This is Yuuta's precious memory of "another" summer vacation.