I'm seeing some posts classifying this as a dark comedy, perhaps akin to "Fai Gam Prae". There's indeed infidelity involved based on the trailer, but looks like this will focus more on the dynamics in a middle-class Thai family.
Aside from Num being an effin mama's boy, I can see tension between Pock and Ice as Ice seems to be more of a granny's girl (Pock's mom). I won't be surprised though if later on Ice will follow her mom's same mistakes.