[1][2] 23 years ago, two baby girls, Ella (Jasmine Sim) and Yoke (Rachel Wan) were switched at birth.

Their mothers Loh May Wan (Margaret Lim) and Jessica Shelley (Sue Tan), rivals from primary school, attempt to unravel the truth behind the baby swap as they grapple with their birth-daughters who are their polar opposites in every way.

Deanna (Gayathri Segaren) finds out that she is terminally ill. She decides to entrust her husband, Kenneth (Ebi Shankara), to her best friend Ananya (Carla Dunareanu).

The theme song "Save Me From Myself" for this series is written by Singaporean singer songwriter and producer Serene Koong.

In June 2020, Mediacorp and social storytelling platform Wattpad organised a Kin fan fiction writing contest.