The backdrop is highschool and Cha Ga Eun is the protagonist who is pretty much an introvert. The story shows us that we must treasure the ones beside us and open up to them. When Ahn Do Young was found by the notorious Sae Ho at first he thought of revealing that Do Young was a robot but then he chooses not to. The key here is confidentiality and friendship. There's a lot of hilarious situations with Do Young's cuteness.
The actors and their interactions were cute, we can watch them on and on. I'm seriously rooting for a season 2!!!