How early is too early to be in love?

Hei-Ji Wong, the son of the corner store’s owner, is a chubby little boy who would do nothing but play games on Switch. However, whenever he sees his dream girl Mimi, he would try to act like he is cool in order to impress her.

When Hei-Ji finds out that Mimi hands a love letter to Sam, a charming and handsome guy, he couldn’t help but feel heartbroken and shattered.

Should he just let her go? Or should he fight for her?

On the eve of Mid-Autumn Festival, Hei-Ji finally overcomes all the difficulties and fulfils Mimi’s wish. He even gathers up his courage and asks about the love letter . . .