Goo Hae-Jong and Jung Ui-Hyun have been friends since childhood — always looking out for each other. Ui-Hyun is the righteous type who can’t stand to see anyone bullied, while Hae-Jong used to be quiet and a little clumsy. But when they enter high school, everything changes. Hae-Jong suddenly becomes popular — even rumored to be part of the school’s troublemaker crowd. Ui-Hyun can’t understand what happened to her once-gentle friend, and a misunderstanding drives them apart. Now, Hae-Jong wants to fix things, but it’s not that simple. Between hurt feelings, school rumors, and their own pride, both are trapped in a mess of “save me” moments — emotional and otherwise. Will Ui-Hyun still come to his rescue? Or is this the one time even an SOS won’t be answered?