Rep. Sim Sang-jung, writer Chang Kang-myoung, and actor Park Jae-min fly over to Denmark. They talk to many workers whose contracts range from temporary to permanent. They wonder if the people of Denmark feel happy at their workplaces.

What funds the Danish government to implement its welfare policies, including free public education and a two-year-long unemployment allowance, is tax. The income tax that the government collects is the highest among that of OECD countries.

Three experts visit a major supermarket in Denmark. The contract workers of the market say that they feel happy, as the company treats them the same as regular workers. The experts wonder if this will be possible in South Korea.

Humanities lecturer Choi Jin-ki, announcer Shin Ah-yeong, and child psychiatrist Seo Chun-seok fly over to Denmark to find the secret to happiness. They talk about the ownership of life while reviewing the educational system of the country.

People of Denmark have started to spend money on private lessons and after-school classes. Students look for their rights and opportunities to seize happiness amid intense competition to get into prestigious universities.

Efterskole, which translates as afterschool, gives a year-long break to their students. Three experts observe how students spend their vacations, being free from the stress of studying.