Growing up, Jie En (Yu Jie En) had one goal in life: to be as cool as the older boy who lived next door. Too busy with his own life to bother with the kid next door, Ye Hong had fun teasing Jie En on occasion, but that was as far as his affection went. To Jie En, however, Ye Hong was everything he ever wanted to be and he looked up to his neighbor as if he were his actual older brother. Naturally, Jie En was devastated when Ye Hong announced he would soon be leaving to study abroad.

Jie En’s parents announce they’ve hired a tutor who, after studying abroad for the last year, will be moving in with them. Jie En is elated when he realizes his new tutor is none other than Ye Hong.

At least until he realizes that Jing Han (Yeh Ching Han), the girl he’s befriended in Ye Hong’s absence is actually Ye Hong’s first love.