Something was haraam.
The patriotic citizen suspected that the pharmacy was selling "unlicensed" anti-impotence drugs.
To make things even worse, these sales were occurring in the Holy City of Mecca (Makkah).
If these had been any other kinds of unlicensed drugs, no doubt the citizen would have reported it to the local police. But since these drugs are associated with behavior that could be considered immoral (if you have a particularly dirty mind,) he instead called the Religious Police.
Our heroes of the Muttawa wasted no time in rising to the challenge.
They arranged a "sting" operation that was sure to be painful for the violator.
A member of the religious police, no doubt whistling while trying to act nonchalant, asked the pharmacist is he had any medicines that could help his embarrassing erectile dysfunction problem.
The pharmacist insisted he had no such drugs.
But our undercover hero returned, whining about his inability to perform and begging for any help the druggist could provide to prevent this man's eternal shame and dishonor. When couched in such terms, the pharmacist had no choice but to try to accommodate the request, so he sent a trusted aide to fetch the magic pills from a warehouse.
Upon the assistant's return, the trap was sprung. A team of highly-trained religious police swooped down and arrested the pharmacist and his assistant. They also raided the warehouse and confiscated large quantities of similar contraband, so they can destroy it (or, perhaps, use them for purely scientific experiments - double blind studies and the like.)
Thanks to the Muttawa, the holy streets of Mecca are once again safe from horny Saudis.
All Saudi Vice episodes can be seen here. With this 22nd episode, we now have an entire season of SV!