Season 1 of Dad's Busy, Uncle isn't Free premiered on December 3, 2017.

Teng is a single man who works as a moderator and producer. He is always busy with work. Teng's younger brother Toad studied abroad in America before getting his girlfriend pregnant by accident. Toad and his girlfriend aren't ready to become parents, but they don't want to get an abortion. Therefore, they go back to Thailand and ask for Teng's help. Toad and his girlfriend begin to live with Teng and make Teng keep the baby a secret. However, once Toad's girlfriend gives birth, they both leave the baby and go back the America.

Chidao is a babysitter. Teng hires her to look after his nephew. Slowly, the relationship between Teng and Chidao begins to develop