You Are My Strength involves a love story between an older brother with his younger brother, these two brother's have grown up without their parents. Chanyeol being the eldest suddenly gets hold of three jobs, enough to get them a small appartment and necesities for Baekhyun, being the younger brother. The thing is when Baekhyun turns 15, he suddenly began being cold towards Chanyeol (who is 20 by the time). Baekhyun always got everything he wanted without knowing the effort his brother did