Zhu Xiangxiang, a gluttonous and useless little fairy of the Immortal Realm, accidentally becomes a prisoner of the Demon Realm. Facing Ming Jin, the ceiling of martial arts power who controls life and death, she frantically acts cute and fawns to save her life. Unexpectedly, Ming Jin turns out to be a pure-love war god with an extreme imagination, misinterpreting her survival instinct as an "immortal realm beauty trap" and "deep love", and starting a deep self-conquest. The two spend day and night together in the demon palace, and Xiangxiang gradually develops a dependency amidst Ming Jin's bottomless favoritism and feeding. However, because Xiangxiang has not formed an elixir core and cannot withstand Ming Jin's true body of "undying fire", a kiss causes him serious injury. To refine fire-suppressing pills to suppress the fire nature, Ming Jin takes her to search for treasures across the six realms.