You Don't Understand, Do you?
It all started at ELECTRIC's (EXO-M) winning debut encore stage. When Lay bumps into a member of OATH (EXO-K), causing Yixing to fall. The OATH member, Suho, can't help but feel bad for embarrassing the debuting group member.
Later that night, when Yixing is lost looking for a washroom, he decides to sit on a bench and text his fellow members for help. While waiting for his members to reply, Suho, being the one responsible for Yixing's embarrassment, decides to go for a walk around the SBS building. During his venture through the confusing building, he see's Yixing and decides to apologize.
Will Suho and Lay be the only ones, to interact or will the rest of EXO find a friend, or even more?
Names of two groups are changed to become clever thingy later in the story.