Two assistants, Lee Xiang and Kat, start new jobs at the financial firm Jones & Sunn. Lee Xiang is an earnest young man who naively enters the world of high finance with noble intentions. Kat on the other hand has a secret.

On the hottest day in 50 years, a serious fire incident happened to a busy commercial tower, a gaggle of fire fighters with an indestructible enthusiasm are going to save lives.