The second son, the Thai ambassador to a certain country, met a cheerful female college student studying abroad who hated evil...

This story takes place two years after the first four stories.

Khun Chai Pawarut's original partner, M.L. Krathin Thevaphrom, married Klao, the owner of a southern rubber plantation, and they had a daughter named Cheewan.During the school holidays, Krathin sent his youngest daughter, Cheewan, to Bangkok to live with Kesara.Wants to teach and befriend Porncheewa, the youngest daughter of Kesara and Chinnakorn, Porncheewa and Cheewan.So they are like twin brothers.We always went everywhere together and did things together.When Pornchiva passed the exam and won a government scholarship to study in Switzerland.Grandpa An also gave Chiwan a scholarship to study.But Chiwan studied in a different city than Pornchiva.

M.L. Suruj Juthathep, son of Khun Chai Pawaruj and Khunying Wannarasa.He had just assumed the post of first secretary at the Thai Embassy in Bern. As soon as he arrived in Bern, he received two letters from abroad.

-The first letter was written to “Saruch”, indirectly asking him to consider Porncheewa as his lover.

- The second letter was sent to Cheewan and forced upon her directly, causing Suruj and Porncheewa to become a couple.

Su Jie ignored the letter.On the contrary, life is full of enthusiasm.Sarut, the biggest benefactor, only thinks about plans to meet the needs of his great-grandfather. His duty is to take care of Thai students who come to Switzerland to study.The biggest headache for Saruj and her classmates was Nava's son Nazarit, who worked hard to pursue Porchiva.The next headache is Khunying Veena, the wife of the ministry's permanent secretary who tries to force her daughter Venus to succeed at every opportunity.

Chivan rents an apartment from Simon, a handsome, kind-hearted Swiss man who, along with two Thai siblings, Dara and Dara, both have a crush on Pongchiwa.Meanwhile, Dara, a quiet young man, often appears dissatisfied with Porchivar's arrogant character.Porncheewa is a perfectly grown beautiful girl.She was Kessara and Chinnakorn's high hopes, but then something happened that changed everyone's lives.When Thailand announced the floating of the baht, Saruj was recalled as secretary to the minister, and almost all Thai children were recalled to Thailand.Including Pornchiva and Chiwan who came back with important secrets!!

In Thailand...Saruj, Pornchiva and Chiwan and others encounter many incidents and obstacles.Saruj was impressed by life during those difficult times.And Chiwan, no matter how fond he was of Sarut, always abided by the orders of great-grandfather An and the teachings of his humble mother.So he tried to stay away from Suruj.