In joint performance with other troupe(s), the member of another troupe that's having antagonist role intentionally tripped Hong Joo Ran who acted as (young) female protagonist before Ondal's performance.
Playful ML intentionally tripped FL because he hold grudge over firecrackers that hurt his butts, right after that FL shoes which already broken without her knowledge (because his younger brother fix it after breaking it) being known to public. iirc
