⚠️ This review contains spoilers!
The book starts off quite strong. We're in New York, and a plague has broken out. Either you're immune to the plague, or you catch it and die. The plague somehow strengthens the ability for a small percentage of the population to use magic. Society collapses, and people flee the city.
However once the book moves onto the bit where you travel the countryside, foraging for supplies, finding shelter and more travel companions (or losing them) it kind of loses steam a bit.
Especially when you get to the too good to be true 300+ person community of New Hope. Which obviously is going to have a conflict of some kind (you let those bad guys leave, who have intimate knowledge of the town, and you don't think they're going to come back and bring more bad guys with them? Really?)
The author builds up a lot of different characters, and so when Lana abruptly leaves them all behind, I don't think that really helps the book either. Especially considering Lana by herself isn't that compelling of a character.