When Jack Ryan Jr is sent to Singapore on what seems a routine administrative task, he worries he's being sidelined in the war on terror. But it soon becomes clear there's more to the mission - and his unassuming new partner, Paul Brown - than meets the eye.

With North Korean missile testing in full swing and a deadly cyclone bearing down on the island nation, Brown and Ryan are tasked with uncovering a mole threatening an entirely new kind of warfare. And it soon becomes clear someone is willing to kill to cover their tracks.

As they race against time to escape both the murderous storm and a team of trained assassins, they must fight against power, prestige, leverage and blackmail to prevent the launch of another worldwide nuclear arms race.

And they might not make it out alive.