The Erodini have finally crossed the line. Maybe it wasn't too much for them, after what happened so many years ago, but they're going to pay.
The Erodini have been pushing Corosa to start a war. It all started nineteen years ago, when Chris, fifteen at the time, had managed to obtain the legendary blade Blue Thunder. The Erodini had been attempting to steal it, but with John's help, Chris was able to take it. Seeking revenge, the Erodini lured John, Chris, Chris's brother Jeff, and Jeff's friend Steven into a cavern below the village of Corosa.
There, they encountered something they never would have thought of even in their darkest nightmares. The Erodini soldier transformed into a titanic, levitating boulder with a huge, piercing eye, and a few dozen smaller boulders that it could control to protect itself and attack. After a tiresome battle, more soldiers returned, with orders of kidnapping Chris. They mistook Jeff for Chris, taking him instead. Chris wouldn't let it end like this.
Slowly, he began to contemplate a strategy of how to stop the evil attackers. At the same time, the Erodini continued to attack, and after shooting and wounding dozens at a meeting in the castle, Chris finally caved. They had gone too far. It was time to fight back.
Does this need more background knowledge, or is it okay?