Here's an outline, tell me if you guys think it works.
SOMEGUY NUMBER 3657. A young man who lived a rather mundane life. At least, mundane as it is described by the members of The Treehouse. One day however, his sunglasses were seized from his person by a moderator of the land who went by the name of "Rare," for reasons he did not know. Refusing to let what he thought was an injustice befall him, Someguy attempted to steal back his sunglasses. This theft attempt on an official failed, and Someguy was punished, his body nearly broken by the tooth and claw of the unforgiving moderator. Slowly he recovered, and returned to his home, disenheartened.
But those troubles were not the end for the man known as Someguy, for the audacity of his crime is reason enough for surveillence to watch his home for all hours of the day and night. And if he took any action that could be considered grounds for arrest, that could be the last anyone would ever hear from him.
One crisp night however, Someguy recieves an unmarked package delivered to his back door. In it, he finds a vibrating cellphone. Against his better judgement, he answers it, and a voice tells him that he is being watched, and he should escape now. Moments later, a wall is vaporized, as Rare closes in on Someguy. As if on cue, a bear barrels down the street in the direction of the moderator. This gives Someguy time to run, as Rare's attention turns to vaporizing the charging ursa. Someguy sprints in the other direction, only to fall into an open manhole. He lands on a raft, just as a mysterious, dirty bearded figure hands him a light and a map, before vanishing just as quickly as he arrived.
With nothing else to do, Someguy must escape the wrath of Rare, and find out who these apparent allies are and why they want to help him.