Puzzle!!!~

I am currently watching an incredibly interesting drama called PUZZLE. The drama is about an English teacher with poor English skill. She acts like a perfect role model infront of everyone else, but show her true arrogance infront of her students. She loves money and her self (in other word selfish) over her students. However, she is brilliant when it comes to "puzzles". And on the weekends, she and 3 of her students solve various cases that has to do with reward and money!!!