The Mouse Guard protect the Mouse Territories by doing the things that need doing, patrolling the byways, escorting travellers, and general scouting. Until our heroes on the cover discover a plot to bring down the Guard.
Petersen is a good storyteller, sure some of his characters are cliched, you will not notice this too much as the amazing artwork sweeps you along and the tale hurries towards its ending.
Well worth reading, and keep an eye out for Mouse Guard Winter 1152.
The three mice on the cover from left to right are Lieam, Kenzie and Saxon. (They're sooo cute)