In the heart of Seoul, Korea, a band of killers-for-hire is slowly making a name for themselves in business. Their style: kill the victims the way their clients want them to be killed, no questions asked. For this group to succeed, they need the help of each other-and an uncle who designs super cool gadgets in the privacy of his own home. However, the foursome will need more manpower to carry out a new mission they have just accepted. Along with an intelligent detective hot on their trail, the killers must accomplish ‘the perfect crime’ or face the consequences. Will their mischievous ways be to much of a burden or will they pull of the crime of century?