Jung Yoo Mi gets entangled in a love triangle between her long term boyfriend (Lee Jin Wook) and a new love interest (Kim Ji Suk)

The four siblings in the Gung family were named after precious jewels: eldest daughter Bi Chwi (Jade), eldest son San Ho (Coral), second daughter Ryu Bi (Ruby), and the youngest son, Ho Bak (Amber). Like an assortment of beautiful gems, their colours may clash and their sharp edges chip away at each other. Using an analogy of a bowl of rice with assorted ingredients to illustrate the workings of a family, the key to a great dish is using the right balance of ingredients in order to create a good mixture. Assorted Gems tells the story of the different lives of the family members and how they learn from their clashes to find the perfect balance.

Kang Tae Joo is an ordinary employee in a department store. Shin Joon Hyuk’s mind was hurt due to his family's problems but he has a nice appearance and superior ability. They both fall in love with the heroine, Han Eun Soo, at the same time. Cha Hye Lin is the daughter of a rich shopping mall CEO and she is an aspring fashion designer who has unique tastes and an elegant appearance. Although she is independent, strong, and spoiled, she is hopelss and careless in front of love. After she was betrayed by her first love, Hye Lin stops believing in true love. She then starts to 'buy' herself new boyfriends by paying them money and forcing them to sign contracts.

One of these men turns out to be Kang Tae Joo and during their contract relationship, Hye Lin begins to fall deeply in love again. She will be entangled in a love triangle with Tae Joo and Eun Soo, who is Tae Joo's real girlfriend.