Underground near the arcade of the opera house.
The Warlock-dressed man spoke to Franca in a shrill voice, "It's simple. There are only three specific terms. First, you two must promise to blow up the hidden door of the secret cave in Deep Valley Quarry, creating a commotion that can attract everyone nearby. Second, I'll pay both of you 50,000 verl d'or with an advance of 20,000. Third, you'll face consequences if you don't uphold your end of the bargain. This restriction applies to both parties. We can discuss the details."
The man had no intention of deceiving the two Beyonders in the contract. Instead, he planned to use his abilities to modify the mission's content the moment the contract was established, forcing them to infiltrate the secret cave in Deep Valley Quarry and retrieve what he wanted, along with sufficient evidence.