Bang Yong Guk, Zelo, Jongup, Youngjae and Daehyun- five assassins trained by the best and the brightest of the field.

They do every mission, no questions asked.

Usually they take down rich, pompous men. The kind of guys with billions of dollars hoarded in off-shore bank accounts so that they can escape paying taxes.

But this mission.

This mission is different.

The higher-ups have demanded the head of a young 23 year old by the name of Kim Himchan.

He wasn't like the other targets. Himchan was a good person. Born into a poor family, he worked hard to earn every penny he had and spent countless hours volunteering to help the homeless.

This irked the five young men.

Sure they were assassins but they weren't heartless.

The higher-ups wanted Himchan murdered and they couldn't give the five boys a reason as to why.

It was classified they said.

What happens when these five boys betray the very people the raised them?

And what tragedies will occur when one boy falls head over heels in love with Himchan?

Who will make it out alive and who will perish, torn down by the very fire they started.....