At the year's end comes Marron Confectionery's inevitable employee evaluations. Third-year non-regular employees Jung Da-hae, Kang Eun-sang, and Kim Ji-song are no exception. As the results bring joy for some and disappointment for others, Eun-sang is oddly cheerful, even humming to herself. Meanwhile, with Da-hae's birthday approaching, her boyfriend Byeong-jun suddenly goes missing, plunging her into extreme anxiety.

After hearing about investing in crypto from Eun-sang, Da-hae and Ji-song are intrigued. But Da-hae, reminded of her father, who ruined his life chasing a single big break, forces herself to stay grounded. Meanwhile, the in-house project proposal she submits makes it to the final round of evaluations. Convinced she's finally earning recognition at the company, she devotes herself day and night to preparations until someone breaks into her home.

After causing a scene at the company dinner, Da-hae is gripped with fear the next day. Meanwhile, Eun-sang is always scheming to make money, and Ji-song, who only thinks about spending it, goes their separate ways. Eun-sang devises a clever money-making plan at work, while Ji-song buys a ticket to China to meet her unfaithful boyfriend Wei Lin.

By chance, Da-hae gets caught up in a motel fire incident and ends up getting interviewed on the news. But when her face gets aired without proper mosaic blurring, she suffers great embarrassment. In the aftermath, Eun-sang protests at the TV station on her behalf, only to receive an unexpected phone call. Meanwhile, Da-hae is shocked when she realizes that it was Dr. Ham she spent the night with at the motel.

With Marron Confectionery's 30th anniversary event approaching, Da-hae is busy with preparations when she notices Dr. Ham and Da-hee starring in the company's promotional video, leaving her with mixed feelings. Meanwhile, thanks to Dong-gyu, Ji-song gets added to the accounting team's group chat, and for the first time, she feels the thrill of belonging to the team.

The cryptocurrency surges! To celebrate, Da-hae and Eun-sang decide to take Ji-song on a trip. But their sense of freedom from work doesn't last long. Soon, the obsession with crypto drives their journey toward disaster. Meanwhile, Dr. Ham suddenly asks Da-hae, "What are we to each other?" leaving her extremely flustered.

The crypto crashes. But now's the perfect time to buy more, or so they think. Da-hae, Eun-sang, and Ji-song take on part-time jobs, hoping to fund their rebound. One day, Dae-young unexpectedly shows up as a customer at their part-time gig, but wait a minute, Marron Confectionery has a no side-job policy! With that, the three scramble desperately to hide their secret from Dae-young.

After more than a decade in hiding, Da-hae's father suddenly returns, clutching a crypto mining machine. Not wanting to ruin her mother's upcoming 60th birthday celebration, Da-hae hides the fact that he's back. Meanwhile, Eun-sang crosses paths with her ex-husband, Dong-jun, sparking tension, and Ji-song grows excited thinking about marriage when she hears that Wei Lin is coming to Korea.

Everything in Da-hae's life seems to be going smoothly, including her work, crypto, and even romance. But when she secretly tries to give Dr. Ham a cookie gift, she runs into an unexpected obstacle. Meanwhile, in the sales team, Eun-sang faces pressure to close a deal tied to a performance bonus and takes drastic action. After breaking up with Wei Lin, Ji-song spends the entire day avoiding Dong-gyu for reasons unknown.

As the crypto value plummets, Da-hae, Eun-sang, and Ji-song grow increasingly anxious. Around the same time, the company announces a chance for employees to apply for an early severance payout. Tempted to invest more in crypto, Da-hae wrestles with whether to take it. Meanwhile, rumors spread through the office that someone sold their crypto right before the crash, making over a million dollars in profit.

As the saying goes, "Life's ups are followed by downs." With the crypto's value at its peak, Dr. Ham shocks Da-hae by announcing his resignation. Meanwhile, Eun-sang faces disciplinary action over issues with the Kang Eun-sang Store, and Ji-song's heart races when she sees a former coworker thriving after leaving the company.

As the shocking truth about Hoppang Bite comes to light, Marron Confectionery gets thrown into chaos. Amid the commotion, Eun-sang is busy wrapping up handovers before leaving the company, and Da-hae stands at the threshold of a new path. Ji-song, too, grows disillusioned with office life, lost in thought. Meanwhile, the three carefully weigh the perfect moment to sell their crypto, a decision that could change their lives forever.