Sisters An Qi and Xi Meng, who have very different personalities, meet brothers Fei Er and A Chi, who have equally different personalities, and an unknown drama unfolds.
After all, how many people can have such a magical and dramatic neighbor relationship with an angel?
But what if you don't want to just be neighbors? Angels, angels, what does it matter... Do angels really matter?
Will that year and that agreement change my life? Or is it destined to become only a bland memory in life?