Maybe, kind of some spoiler-ish things but I swear I didn't tell you the whole plot!

This movie is a "finding yourself" kind of movie. The weight loss and plastic surgery is similar to what you'd see in My ID is Gangnam Beauty (내 아이디는 강남 미인, sorry I had to look up the English title, so I think that is right).
The main character has terrible confidence, which isn't helped by the industry she is working in or that fact that she is a ghost singer to a skinny, societal-beauty-standard achieving singer. It's always sad to see that kind of situation, someone thinking there is something wrong with them, so they physically change it, but there are sooooo many plastic surgery clinics and ads everywhere in Seoul that this is pretty applicable to real life. In that aspect I like that it is relatable.

The movie definitely has funny parts! I like how the lead actress portrayed her character and I like the lesson of the movie. The main song, Maria, is the highlight for me (because I love high notes like in western music) and it's just a kicka** moment :)