From the Steam Store page:
You are the Viceroy – a leader charged by the Scorched Queen to reclaim the wilderness and discover lost riches for the Smoldering City, civilization's last bastion against the Blightstorm that destroyed the old world. Unlike most survival city builders where your focus is on a single city, in Against the Storm you must build a vast, prosperous network of settlements populated by diverse fantasy races, each with their own specializations and needs.

The wilderness holds many hidden dangers, and never-ending storms will batter your population into submission. If your settlements should fall, then the expedition may end – but not the game. Against the Storm is a roguelite city builder, meaning you will carry forward the resources, upgrades, and experience of your past expeditions each time you set off for a new journey into the wild.