Lucky three times

Get to know Mo, a future six -grader, almost an excellent student and a born detective. Ahead of Mo is the whole summer! She will deal with karate and fishing with her best friend Dale, will help Colonel and Miss Lana in the family cafe, who raise her, and will continue to search for her mother (the newborn MO was found on the river bank eleven years ago, her story remains a mystery).
However, everything turns upside down, when a murder happens in their quiet town, Detective Joe Starr is taken for the investigation, and Dale is under suspicion. Mo and Dale organize their own detective agency to find the killer and take suspicions from Dale. But in the process, they open the secrets of their own life