After a bitter struggle to get a job, In-seong is faced with the painful reality. Moving back with his parents, he picks up a smartphone, which happens to say it’s CEO Kim Seon-ju of Silver Lining locked up in the phone. Is this some kind of new scam? Right then, the phone asks him to act for the CEO of Silver Lining.

Becoming a CEO overnight, In-seong corrects injustice with the absolute power he gained on the first day at work. As he tracks Seon-ju’s whereabouts on the day of the accident, suspicion against Ms. Jung, who may be a reliable ally or a deadly enemy, starts to grow.

While In-seong is confused by the texts and call from the unknown number, Seon-ju believes it’s a chance to track the caller. On the day of the meeting where Silver Lining’s enemies within and out are gathered, In-seong collects all executives’ phones using security as an excuse. As he calls the unknown number back, one of the phones rings.

In-seong and Se-yeon now shares the secret about Seon-ju trapped in a smartphone. The closer they get to the truth, the bigger the suspicion against him grows. Bumyoung’s executive director, Mi-ran’s advice, “Don’t trust Kim Seon-ju too much” keeps bothering In-seong, and he ends up checking out the place where Seon-ju went missing. There, he encounters a mysterious man.

After CEO Oh Bum-geun passes away, the fight to become his successor becomes more tense and the threat against In-seong and Se-yeon grows. In-seong wants to hire a security guard, but for some reason Se-yeon disagrees.

In-seong is determined to catch the real culprit after he sees how much Min-a misses her dad. He manages to corner Mr. Kwak, who had the answer to everything, but something unbelievable happens.