female lead and her friends solve mystery and meet new people when there is a trouble . the characters are studying in a school where they find more trouble so they form a club to work together. the female lead have two younger brother who help them too. there parents were killed when the female lead was 11 year old . since she have to take care of her brother she forms a club were the school will pay her (don't ask how that's legal) . she meets ml and her friends and they join the club .they meet new people and and help them. they also meet many criminals and help them too.
