Season 1

Pafhan reunites with her sister Alice after 15 years. Alice appears as a young entrepreneur, accompanied by Rosarin and Jirapat. Pafhan asks Alice if she has ever regretted the path she chose. Jirapat follows Pafhan to the Pancake roll shop, where they meet Boossaba, Pafhan's grandmother who once helped her as a child. Alice asks how Pafhan has been and invites her to a birthday party.

Pafhan searches for Korn mentioned in the letter, and Boossaba, worried, asks Jirapat to help. Jirapat finds Korn and asks him to play the role of "Korn" in the letter. Korn proposes that Jirapat accept the Samkorn Thai Tech into the Sandbox, but Jirapat refuses. Pafhan attends the birthday party, where Alice asks about Korn. Leelawadee is happy to see Pafhan again.

Pafhan asks Korn to pretend to be her boyfriend. Alice asks Korn about his work, and Jirapat quickly says he's about to invest in Korn's company. Leelawadee apologizes to Pafhan for abandoning her 15 years ago. Banthoon assigns Alice to handle work in America, while Withoon takes charge in Thailand. Pafhan, Alice, and the Samkorn Thai Tech apply to join the Sandbox.

At Samkorn Thai Tech, some investors approached them, but Jirapat intervened because they were trying to steal information. Pafhan invited Korn to celebrate a birthday party at the beach, with Jirapat joining as well. When Pafhan and Alice saw Korn coming to the Sandbox, they realized he wasn't actually a businessman. However, Pafhan asked Korn to hire her as the president of Samkorn Thai Tech.

Samkorn Thai Tech develops a program to detect fake and edited images. Alice creates an AI that can quickly manipulate images. Mark lets the Samkorn Thai Tech advance to the next round because he sees Korn's potential and thinks they were given too little time to fix their code. Pafhan wonders why Jirapat has to help them.

Pafhan enters the Sandbox and chooses Jirapat as the team mentor. The team quarrels over dividing the shares, but Pafhan makes a decisive rule to show authority, which Yayha acknowledges, bringing all five members back in harmony. Korn accidentally meets his grandmother at the hospital and learns that she is in the early stages of Parkinson's disease.

Korn proposed using sensors to help the elderly and people with Parkinson's disease. Alice told Pafhan to try contacting Morning Group, but she ended up being tricked into working for free. Pafhan returned to working on the project to help the elderly and people with Parkinson's disease. Grandma asked Pafhan which Korn she liked more from the letters 15 years ago or in the present.

Pafhan searched for companies that invest in CSR initiatives. Korn told her that Grandma was in the early stage of Parkinson's. Pafhan went to Morning Group and found Korn kneeling to apologize for damaging the company's property. She played the audio clip of how they had tricked her and used it as blackmail to make them support True Angel as a CSR project.

Alice Company faced protests because another company reduced its number of employees. Korn's father became very angry when he found out Korn was not actually the company's president. Drunk, Korn went to sleep at Pafhan's house. Jirapat found out and tried to block Korn. Korn invited Grandma and Pafhan on a date. Grandma told Jirapat to bring Pafhan's latest letter to give to Korn.

Pafhan became confused after learning the truth about the letters. Jirapat told the Samkorn Thai Tech team that on Demo Day, if they didn't pass, he would invest in them himself. Korn encouraged Pafhan, saying that Samkorn Thai Tech had come this far because of her. Leelawadee applied for a part-time job at Grandma's shop. Mark contacted Korn to offer him a job at Good Goal.

Korn told Mark to take all five members of Samkorn Thai Tech. The team presented True Angel, which had lower stated accuracy than the sensors from Alice Company, but during testing it proved to be more accurate. Mark and Good Goal offered to acquire Samkorn Thai Tech. Jirapat tried to step in and stop the signing of the contract.

Jirapat realized it was an acqui-hire, but he was too late to stop it. Good Goal fired Pafhan and Yayha, taking only three developers with them. Korn told Jirapat that Grandma was in the early stage of Parkinson's. Pafhan encouraged Korn to let go. The three of them went to America, and Pafhan started anew by applying for a job at Alice Company.

Pafhan, now the CEO of Sunshine Company, developed Miracle World, a home- and in-vehicle patient-care system. The company was hit by a ransomware attack. Fahfard resigned to work with Withoon. Jirapat decided to confess his feelings to Pafhan. Korn returned to Thailand and rushed in to help. The three of them chose not to renew their contracts and reopened their company in Thailand once again.

Jirapat used an elevator speech to persuade Korn to accept that Pafhan had changed a lot. The two agreed to compete fairly for Pafhan's heart. Alice assigned Pafhan to approach Samkorn Thai Tech to continue developing Miracle World. Pafhan coaxed Korn to work with her. Kirakorn also followed Yayha back to rejoin the team. Tanakorn became the new president of Samkorn Thai Tech.

Alice planned to enter Miracle World in the Smart City bidding to compete against Morning AI. Jirapat and Korn decided to confess their love to Pafhan once again. Leelawadee opened a giant pancake roll store for Grandma. Withoon sent journalists to interview and criticize Sunshine Company over the ransomware attack.

Jirapat invested in a project to support orphans. Pafhan participated in a bidding project, advanced to the final round, and wanted both Korn and Jirapat to be part of her life. Alice sought investors to expand Sunshine Company. Rosarin encouraged Jirapat to invest immediately. Miracle World won the bid successfully, and Pafhan, Korn, Alice, and Jirapat continued to run the business together.