In the sixth episode of Cashero, the tension escalates as Anna and her men storm into the lab, discovering that the ampoules containing the extracted superpowers are missing. Anna believes Nathan to be the culprit. Meanwhile, at the club, Nathan's men are about to capture Sang-ung when the cops show up. Detective Hwang spots Sang-ung, but before he can act, Ho-in grabs Sang-ung and Eun-mi and escapes.
Ho-in and Eun-mi feel a sense of guilt and do their best to patch up Sang-ung before sending him to his family dinner. Unfortunately, Hwang shows up at the family dinner first and questions Min-suk. Sang-ung arrives soon and overhears Min-suk defending him and his vigilante acts. He apologizes and she promises everything will be alright before he is arrested. At the same time, Anna approaches Ho-in and Eun-mi.
In the precinct, Hwang reprimands Sang-ung and claims that superheroes aren't above the law. He believes that people get hurt because of this vigilantism. Sang-ung retorts that they have a responsibility to help people. Hwang doesn't budge and states that Sang-ung is going to be charged.
While he is in the holding cell, Nathan visits Sang-ung. He reveals that he has been pulling the strings all along - from the bus crash to the bullies robbing the PS5 seller. He even left the files so the trio would end up at the club. He is planning on grabbing Sang-ung when the cops are transferring him. When Sang-ung doesn't react, Nathan forces him to play by threatening Min-suk.
At home, Min-suk finds paperwork of Sang-ung's loan and is upset. On her way to Jeong-ja's, Nathan's men try to kidnap her. She calls Jeong-ja and reveals that she knows she is Sang-ung's collateral. Jeong-ja is about to lose her, so she better send in help. Instantly, Jeong-ja's men show up and rescue Min-suk.
At the precinct, Nathan's men pretend to be cops and take custody of Sang-ung. On the way, Sang-ung makes his move, attacking the Vanguard. In a turn of events, Anna's bodyguard helps him escape. The episode ends with a cliffhanger as we see Sang-ung and his allies preparing for their next mission against Nathan and his criminal empire.
Sang-ung is bewildered to witness Ho-in and Eun-mi collaborating with Anna. They regroup at Ho-in's abode, where Anna reveals her motive: she saved Sang-ung in exchange for a job. Apparently, Nathan is developing a hazardous drug that has already received FDA approval. Anna enlists the trio to steal the ampoules from Gimhae Bank, run by the Vanguard, and destroy Nathan. This way, she aspires to reclaim her status as the heir while the trio saves the world from Nathan.
However, the trio realizes that Anna's true intention is to kidnap them and seize the ampoules for herself once they've stolen them from the bank vault. But if they destroy all the money and assets in the vault along with the ampoules, they can effectively cripple the Mundane Vanguard.
Meanwhile, Nathan eliminates two board members who disagree with him. Won-do, displeased, gives Nathan one last chance to get his hands on Sang-ung. Min-suk begs Sang-ung not to risk their lives, but he insists it's his duty. Determined to aid him, she demands a 30 million loan from Jeong-ja. It transpires that Gimhae belonged to Jeong-ja, and Min-suk realizes that the loan shark wants Sang-ung to help in some capacity. Min-suk refuses to let him get hurt, and Jeong-ja is impressed by her determination. Once she secures the money, Min-suk hands it over to Sang-ung and reveals she has some news for him.
Hwang pores over his case files, and we observe that his targets are all influential individuals who support Beomha. He notices that all recent incidents involve Sang-ung and Beomha. He deduces that someone at Beomha is toying with Sang-ung before taking him down for good. And that will likely happen at Gimhae.
The trio arrives at Gimhae Bank. Anna orders her bodyguard to steal the ampoules from the trio and capture Sang-ung if Nathan appears. Some of her men are inside the bank, waiting for Anna's signal once the trio secures the ampoules. Ho-in poses as a customer seeking to open his safety deposit box. Eun-mi heads to the back entrance and powers up. Sang-ung introduces himself. Recognizing him, the staff escorts everyone out, including Anna's men, and shuts down the bank. Outside, Anna panics and orders her men to break in.
Inside, Gimhae's security points guns at Sang-ung, and he asks if everyone is ready. The tension is palpable as they prepare for the heist that could change everything.
