This is a review of the entire series, not just #1
After the US (after Canada's water supply) retaliate against a Canadian attack, a group of freedom fighters take on the invaders. There are flashbacks about how Amber ended up in their party. The comic collection concentrates on the various characters as the fight against the US military continues.
Interesting and well-written, this collection is well worth a look. It's nicely illustrated as well by Steve Skroce. Highly recommended.