Due to negative feedback to a public service announcement on suicide prevention that she created, psychologist He Dun experiences a blow to her career. To cheer up, she meets her best friend at a restaurant where she runs into Qian Kai Yi. He is now hosting a radio program dealing with emotional issues. At his insistence, He Dun agrees to be his collaborator and co-host. As the show gains listenership He Dun's counseling clinic becomes equally busy.

In an aerospace city in the north, seven children who were born an only child became closer than siblings and called themselves "The Big Dipper." They all promised to conquer the college entrance examinations so they can go to Beijing together but seventeen came and went and only Huang Yingzi made it. "The Big Dipper" was no more as everyone parted ways. Huang Yingzi went to Beijing for school and Jiang Yi left for the States. "Who do you like at the age of seventeen" has become a mystery lingering in the hearts of the seven people. As newcomers in the workplace, they were bruised and battered from the skirmishes between their ideals and reality. Their once pure emotions are like shining stars in the night sky. Huang Yingzi wants to reunite the group only to realize that there a question remains. Meanwhile, Jiang Yi and the others have already been presented their answer.

"Hello, Saturday" is the rebranding of popular Chinese show "Happy Camp", hosted by He Jiong and with a fixed group of regular celebrity members. The program showcases the talent of various stars as well as social topics through creative and diverse content and games. It aims to spread positive energy whilst keeping up with the current trends and leading youth culture.

DI Group’s board member Ding Wen Xiao (Jevon Wang) works hard for the company to be listed in order to fulfill his promise to his father. After many years of preparations, he has almost reached his goal. The success of the upcoming fashion show with DI’s chief designer Mu Ling Shan (Lee Hsin Ai)’s creations will decide upon the company’s fate. But things don’t go as planned. Wen Xiao’s life becomes intertwined with dressmaker Yan Xia (Fei Xing) who owns her own little shop named “The Faded Light Years” in a fisher village. With Yan Xia by his side, betrayals and grudges surface and a conspiracy is uncovered. To Wen Xiao, Yan Xia is like the blazing sun who guides him through the haze.

As the eldest daughter of the Fang Conglomerate, Fang Yu was raised to become the sole successor of the company, yet she goes against her family's objections to pursue boxing and won the championship title at the young age of 18. On the other hand, Ming Tian comes from a poor family. He once stopped schooling for three years in order to work and he decided to apply for a sports scholarship despite not having any background whatsoever. Fang Yu was one of the first to see his talents and their relationship grows over time.

He Dun, Qian Kai Yi and friends must resolve all the mysteries and misunderstandings surrounding their lives to grow and become better versions of themselves.