Chief of Staff Episode Rating Graph

Oh Won-sik makes a move that jeopardizes Tae-jun’s standing with Song Hui-seop. Seon-yeong gets a surprise visit. Do-gyeong learns about Hye-won’s past.

While Hui-seop does whatever he must to save himself, Tae-jun, Seon-yeong and their staff get ready for his hearing. Gyeong-cheol seeks justice.

As the confirmation hearing gets underway, Tae-jun is caught off guard by Hui-seop’s self-serving machinations and scrambles to survive.

Tae-jun contends with a rival staff member. Yun Hye-won volunteers to talk to a key witness. Kang Seon-yeong becomes concerned about Lee Seong-min.

Vowing to finish what Tae-jun started, Seon-yeong pushes for a special probe into the slush funds, but Hui-seop tries to stop her.

Seon-yeong’s career is in peril, rumors unsettle Won-sik, Do-gyeong returns to the team, and Tae-jun determines to go down a path that he may regret.

Han Do-gyeong joins the staff as a new intern. Tae-jun makes a controversial proposal for the upcoming government audit, which has everyone on edge.

While Tae-jun works on a new plan to turn Chang-jin and Hui-seop against each other, Yun Hye-won and Han Do-gyeong try to pin down a mole.

Needing more information on Hui-seop's slush funds, Tae-jun and Seon-yeong place Oh Won-sik in a sticky situation.

Hui-seop invites Seong-min to join his party. Seon-yeong gives Tae-jun a stern warning, but he doesn’t waver. Do-gyeong makes a costly misstep.

Tae-jun struggles with the ramifications of Seong-min’s decision. Do-gyeong has information that may help Tae-jun. Won-sik grows suspicious of Hye-won.

Shaken up by Chang-jin's tactics, Seon-yeong and Tae-jun search for more evidence against him. Choe Gyeong-cheol launches an investigation.