To find out the truth, Ho-woo decides to become an accountant and join Taeil Accounting Firm.

Ho-woo refuses to join Seung-jo's team, while Hyung-woo tells Jang-hyun to add Ho-woo to his audit team.

Taeil Accounting is in chaos after the disclaimer of opinions is submitted, but Ho-woo comes up with a plan.

Ho-woo finds out who was really behind the report on Haebit Construction.

Upon seeing Ji-soo, both Ho-woo and Seung-jo get shocked. They need to find a way to prevent Soma Tech from being sent to bankruptcy court. Eventually, Seung-jo comes up with a way to save Soma Tech, stabbing his father in the back. Meanwhile, VP Ahn Seung-yeon returns to the firm, which disrupts the peace Je-kyun has been maintaining.

Ji-soo proposes Taeil Accounting to sell Cakebean, a dessert franchise. Seung-jo, who didn't want to be part of the sales deal, becomes the project manager after hearing Ji-soo was the client. While carrying out due diligence on Cakebean, Ho-woo learns that they've been cheating on their franchise stores. Meanwhile, Seung-jo looks into HK Private Equity and finds out the danger Ji-soo is putting herself into.

Ho-woo decides to accept Sang-ah's offer to help. VP Han is furious with Ho-woo for ruining the sales of Cakebean, but he doesn't fire him. While looking into the identity of AN, Ho-woo finds out that VP Ahn Seung-yeon could've been involved in helping Sang Ah Group build up a slush fund.

Ho-woo is sure that HK Private Equity already have known how much Sang-ah Group would bid since Han Je-kyun is the representative of Sang-ah Construction for the auction. Seung-jo tells Ji-soo that the fund operator of HK Private Equity is his father. Jang-hyun tells Hyung-woo that he can come by whenever he wants to speak his mind.

Lee Sung-joo finds out Ho-woo's relationship with Haebit Construction. Lee Bo-sung falls for Lee Sung-joo's trick and loses all of his shares.

Jisan Bank is in trouble. To protect Jisan Bank from Je-kyun, Ho-woo, Yeon-ah, and Ji-soo go to see the president of Taeil and tell the truth about Je-kyun. Je-kyun announces a sudden personnel change to Ho-woo. Ji-soo says she will volunteer to be investigated by the prosecution to make Je-kyun take responsibility.

Seung-jo and Ho-woo successfully send Je-kyun to prison, but they soon hear that Je-kyun is out on pardon. Learning of Je-kyun’s plans to take over a bank in Korea, they try to protect small to mid-sized banks. Meanwhile, they receive help from an unexpected ally. Later on, everyone finds their lives moving on from the hectic struggles.