Shin Ha Kyoon, Jo Yoon Hee, Yoo Hoon Sang, Lee Shin Sung

Pied Piper focuses on a police negotiation task force that specializes in tense, worst-case scenarios that require highly trained communication. They handle all sorts of cases, from suicide to hostage situations to terrorist attacks, and even war. They do their work with words, not weapons, to neutralize volatile situations before they erupt into full-blown catastrophes.

Joo Sung-chan (Shin Ha-kyun) is a genius lead negotiator of the crisis negotiation police unit. Meanwhile, Yoon Hee-sung (Yoo Jun-sang) is the real Pied Piper the anchor of TNN Night News channel. Yeo Myung-ha (Jo Yoon-hee) is an inspector of the Crisis Negotiation Team.