The Fiery Priest

When an altar boy collapses during a memorial event, a full-scale drug investigation begins. However, the abrupt silence of the media in the investigation compels Father Michael Kim Hae-il to head to Busan in order to uncover the truth.

Haeil heads to Busan, determined to uncover the group behind the altar boy's drugging; Daeyoung scrambles to find a way to reach Busan.

Hae-il and Dae-young seek to join Lee Cheol-yong and Gu Ja-young in their cartel investigation; the Gudam family members each plan their move to Busan; across the city, Hong-sik's dark scheme to establish his drug empire in Busan begins to take shape.

Hae-il and Dae-young rescue Ja-young, while a suspect in interrogation suffers an accident amid the chaos, and the three decide to team up in their pursuit of the drug cartel; with his drug plant operational, Hong-sik begins expanding his reach.