Ya Meng from Holy Night Academy is rumored to be a very troublesome elementary school student. She looks cool and hot, but she is actually a girl who is not good at words. In order to hide herself, she often uses a poisonous tongue to cover up her cowardice. Finally, she joined the Guardians and embarked on a series of adventures. But in the first year of junior high school, the arrival of a person changed her fate: she fell into hell and lost her protective sweetheart.