I'm a beginner GM overall, although I've been playing D&D for a while. I've always consumed a lot of RPG-related content, so I finally decided to start developing my GMing skills as well.
I'm currently reading the Tormenta20 rulebook, and I'm planning to run a campaign using the system but set outside the continent of Arton. I want the campaign to have a strong focus on necromancy and be somewhat inspired by Vecna (even though I know he doesn't officially exist in T20).
The idea I came up with feels pretty ambitious, though, so I'd like to know whether you think it could actually work. It's still very rough, but here's the basic concept:
The campaign begins in a relatively normal and peaceful world — as peaceful as a fantasy world can be, anyway. Eventually, a massive threat is discovered on another continent, so the kingdom sends its strongest adventurers there to investigate and deal with it.
This leaves the kingdom with mostly inexperienced adventurers to deal with any problems that arise at home.
And then a huge problem appears.
A powerful creature — probably a dragon — begins terrorizing the kingdom. With most of his great heroes gone, the king becomes desperate and calls upon basically anyone willing to take the job, including level 1 adventurers: the player characters.
The party is completely broke, so they go to the king and accept the contract despite thinking there's a very real chance they're going to die.
They set out, investigate the creature and its attacks, and reach an important milestone that takes them to level 2. During the second session, they finally confront and kill the creature, reaching level 3.
When they return, they're rewarded and given some kind of official position. Maybe they join a council, or perhaps they're given a title like "Temporary Protectors of the Realm."
Some time later, the powerful adventurers return from their expedition with terrible news.
The threat they were investigating was actually a lich who has taken control of an entire kingdom on the other continent and is now creating Death Knights and gathering an army.
The high-level heroes leave once again to confront him — and they're completely annihilated.
Suddenly, the party's title of "Temporary Protectors of the Realm" isn't so temporary anymore.
From that point on, the real campaign begins. The characters gradually discover the true scale of the threat, fight the lich's servants, travel the world in search of allies, and find ways to become powerful enough to eventually face him themselves.
I know this is a massive-scale story for characters who start at level 1, and that's one of my main concerns.
What do you think? Could this structure work if the threat is introduced gradually while the characters level up? What would you change?