Kanna was ugly, and she had been treated badly from everyone aside from a man called Kousuke. Therefore, she decided to have plastic surgery on her whole body to win his heart and the rest of the world. Will Kanna overcome her insecurity and lack of confidence after this?

Kanna-san Daiseikou desu! was adapted into two live-action films: a Korean film titled 200 Pounds Beauty that was screened on December 24, 2006, and a Japanese film titled Kanna's Big Success! that was screened on January 17, 2009.