Should i start watching One 나무, 트리 Hill? [[read first]]

Im not sure yesterday i saw that episode idk what season it evenwas it was like 'can 50 분 change your life' ? like,they dont have the class and can go around campus with their partner and answer Qs. I really like the show but idk how good it really is, should i start watching it ?Whats the story even about?
pls help
thanks
xx