Thieves walked into St Laurence Hall in Laurencekirk and stole £150 worth of alcohol as the cast of Oliver! were on their final dress rehearsal.
The Laurencekirk Amateur Musical Society production opened on Tuesday and will run until this Saturday, June 28.
After a break last year owing to a lack of funding, the theft may threaten future productions.
Thirteen youngsters from the local area are part of the cast.
Cast member Ian Ross said: “Being such a small community group we work to a strict budget and we had just restocked the bar.
‘This show will be fine but with the money lost future shows will be threatened.”
PC Beverley MacKinnon, of the Kincardine & Mearns Local Policing Team, said: “This theft has been very upsetting for the members of the musical society as they rely heavily on fundraising for their activities.
“We interviewed two youths that night who were later released. I would appeal for any witnesses to contact Police Scotland on 101 or Crimestoppers anonymously on 0800 555 111.”
Performances will be nightly from 7.30pm, with a Saturday matinee at 2.30pm in the St Laurence Hall.