Luo Jun is a proud security guard, and the best security guard out there, bar none! In the bustling city, Luo Jun thrives with his exceptional skills and extraordinary intelligence. Facing formidable enemies, he defeats them with his fists. Facing cunning enemies, he overcomes them with his wisdom. But what happens when the beautiful and mature divorced female homeowner, the unparalleled intelligence of the aloof CEO's sister, and the dashing policewoman's entangled love web attack him? Do his fists and wisdom become useless? In this chaotic world, I cannot break free!