Detective Conan OVA 8

Sonoko wrote and directed a play for the charity of her local church, also wants to be the star of the play. She decided to do a murder. However, after speaking with a part of the play for Ran, Conan, and Detective Boys, Haibara listened and found a lot of flaws in the plot, including the evidence that will expose the killer. Thanks to Conan and the Detective Boys help Sonoko could write the script?