Maple and Sally (and occasionally a guild member) explore the new stratum, an underwater one. They get into the usual shenanigans while gathering new tricks. While I still enjoy reading this nice slice-of-life computer gaming, I am beginning to feel the story is loosing its steam. Hopefully the coming PvP event adds a bit of energy to the series even though I really hope it does not become a Maple vs. everybody else.
There are some novels in the series that would be better off being portrayed in the manga and anime then the novel. This is one of them. Consider this volume to be like exp grinding in a game.