6 teenagers, a wraith, a runaway, a convict, a heartrender, a sharpshooter, and a thief. the ice court one of the most secure places in the world are going to before an impossible heist, goal capture the scientist who created a drug called Jurda Parem that harms and pushes the Grisha to their breaking points and is highly addictive and fatal if not given more.
Kaz Brekker a skilled thief is kidnapped by Jan Van Eck a very wealthy man of the merchant council and is offered a chance of a lifetime, 30 million kruge. The only way they will get the money is with the rescue of the scientist who created Jurda Parem. So, the council can destroy all products and the scientist.
As Kaz and the Group are preparing to leave Ketterdam on a boat. Rival gangs attack them so that they can not leave the port. Inej while in the process to get to the second boat and stall for the rest of the team; she gets stabbed and Followed after so their secrets can't be stolen any longer.
When Van Eck double-crosses the Dregs to get the Kuwie son of Bo Yul- Bayur who created the recipe for Jurda Parem. Van Eck desires to get that recipe for Jurda Parem and sell it for profit instead of destroying it.
Inej was caught in the middle of everything when they were in the middle of the trade, Kaz looked at her with a small glimpse. Van Eck caught on and ordered a Grisha to take her and keep her hostage till they got Kuwie.
There left on the island without a wraith, faith, and satisfaction.