Gentle outside and strong inside, a female translator. Flirtatious outside and reserved inside, a boxing coach. At her wit's end, Lin Yan returned to her hometown for a blind date and met the tough guy Xing Yu, who brought a new turn of events. She judged him as too frivolous and unreliable. Since then, this frivolous Coach Xing haunted her relentlessly. Multiple accidental encounters and crazy flirting were initially thought to stem from a man's lustful nature. Little did she know, it was a long-planned, years-long calculated restraint.