When the System drops magic on the world like a badly-timed software update, sisters Kat and Margo expect weird - but not pixies-kidnapping-them-to-save-a-dungeon weird.
Turns out Kat's noble status makes her the only one who can claim the dungeon core before a biker warlord named Damien shows up to ruin literally everything.
If Damien gets there first, he'll forge a nightmare weapon, squash the pixies, and kill Carson - the twelve-year-old who the System turned into a dungeon lord and is doing his best with zero training and way too many murder-kitties.
Failing to beat the biker to Damien's core is not an option, but can a twelve-year-old girl and her little sister really save Carson? And can her father and their found family catch up with them in time, or will they have to face danger alone?
System Integration continues, and doesn't give anyone time to second guess.