"3 adults and 5 kids for "War Stars" or whatever please." Kogoro told the what-he-considered-attractive lady in the ticket booth with a nonchalant-ish tone in his voice. We wasn't sure how he got roped into taking all these kids to some science fiction movie, but there he was. Paying for them.
As they headed for the concession stands, he noticed a group of kids around Ran's age in some type of argument, but didn't think any more about it.
About half-way into the movie, a loud scream came from just outside the auditorium.
"I'm gonna see what's going on. Stay right here." Kogoro told Ran, Conan, Sonoko, Ai, and the Detective Boys group..thing, though he knew it was futile, because he sensed them running behind him moments later.