Se Hun is a model student with good grades, but an unfortunate incident on the bus one day earns him the humiliating nickname of ‘Erector.’ The choir director, Won Dae, asks him to be his running mate for the upcoming student council election. Needing to rehabilitate his image, Se Hoon agrees, only to find out that he is Won Dae’s twelfth running mate. With his pride bruised, Se Hun decides to join Sang Hyun, a walking luxury man known as the local social butterfly.