Growing up in a tumultuous environment, Jonathan Mar despises weapons and those who peddle them. However, when international arms dealer Koko Hekmatyar recruits him as one of her bodyguards, Jonah has no other option but to wield arms. Together with Koko's former special-ops mercenaries, Jonah is tasked with safeguarding Koko and her lofty ambition of global peace from the myriad of threats that plague her industry. Jormungand tracks the exploits of Koko, Jonah, and their crew as they travel the world, selling weaponry through the HCLI international shipping company. Since Koko's operations violate international law, she must constantly evade both local and international authorities while dealing with armies, private defense contractors, and rebel groups. Pursued relentlessly by the CIA and besieged by assassins, Jonah and the team are compelled to defend Koko and her dream of world peace with their lives, or die trying.