The story isn't too unpredictable, you'll probably get the plot within the initial episodes but the growth of characters as an individual and the bonding they share is what keeps you seated.

Min Hui's struggle as a single mother in a male dominated corporate world was real, she did what she had to do to survive. Xin qi was right to be angry about the misunderstanding, he didn't saw it coming but later his understanding for the whole situation was applaudable. He wanted to fill the gaps and he sure did, it wasn't easy for min Hui to suddenly accept him again because a relationship doesn't last long if anyone has trust issues to begin with, so it was important to be on the same page. Their chemistry was truly very natural, both were at their best with the kid, always a pleasure to watch them together.

I would definitely re-watch some scenes just to feel that warmth again.