Unfortunately, I thought of another, pretty good plot outline for Volume 4. Odds are I will think of more, but I didn't want to forget this one.
As you now, I'm using the Mana Root Harvesting plot on Volume 3, purely because you voted for it here, but even though I'm just several chapters into Volume 3, I already thought of another plot that sounds interesting to me. You know the drill. I'm going to list the three, available plot outlines, and at the bottom of the post, you can vote for your favorite. It will take a while to finish Volume 3, so you guys have all the time in the world to come and vote.
#1 - Demonic Dimension Plot ~ I don't have this outline entirely figured out, but basically, Timothy and his friends get summoned in a sea, in one of the many dimensions of hell. Since one could summon demons from hell, it only makes sense that demons to summon animals from the main universe. I think this can be a very unique, neverbefore used plot, so if you like it, be sure to vote for it.
#2 - Body Switching Plot ~ Timothy and the team switch bodies with other fish, from across the world, where their soul, their essence, is easier to develop. In the world of magic, one has to have a tough soul, so this plot will help develop that aspect of the story, whilst keeping the team in the sea. The latter will help keep the base aspect of the story of Tim being a Stingray, alive.
Did you know this story is from Royal Road? Read the official version for free and support the author.
3# - Sea Orc Plot ~ Timothy and his friends would have to help humans here, a city of humans, who are suffering from Sea Orcs, that had shapeshifted to walk the lands. A Sea Orc is a dragon who lives in the sea, as the name suggests, but a few hundred of them had decided to invade the lands, so they figured out how to shapeshift, and turned into twelve-foot-tall humans. Or, er, Orcs? The point is that they can walk, they're practically indestructible, and can destroy cities no matter the Arcane standard of a city.
#4 - Mana Channel Universe Creation Plot ~ This contains a spoiler! On the latter chapters of Volume 2, Timothy learns how to make new abilities, using the manipulation of mana channels. Now imagine a god doing the same, but creating universes, rather than powers. This plot would include the team entering a special universe of a certain mana god, and performing specific tasks that would aid their understanding of mana channels. This in turn, would help the team learn what it would take to create a micro universe, nano universe, or needle universe. It's perplexing, but I didn't want to forget this idea, so I'm jotting it down here.
You can vote below. It's also worth noting that the Sea Orc plot got a lot of votes last time. If you're an author, feel free to take any of these ideas, I'm not worried, because I will likely find a more manic way to write the plot.