Mo Money Mo Problems is an unannounced mission in Dead Rising 2: Case Zero. It takes place in the Brockett Gas Station in the afternoon. It involves returning Gemini Vargas' gems to her in return for $15,000.
Gemini Vargas is found weeping in the junkyard at the Brockett Gas Station. She explains that all the money that she has won from Las Vegas has caused nothing but trouble for her. The only things that were precious to her were the gems that her husband Fausto had bought her when they first got married. Unfortunately, she had to leave them behind at the Quarantine Zone during the zombie outbreak.
Once Chuck returns the gems to Gemini, she gives him the remaining half of their winnings out of gratitude.
Gemini: It's not good, all this money has caused nothing but problems. The only thing that was precious to me was the gems that Fausto bought to me when we first got married. I had to leave them at the roadblock... Hey now, would you get those gems for me? I'll give you rest of our winnings. Thank you so much. These gems are my lucky charms. Makes me feel like things are going to be better now. The money is yours.
The jewels are next to a yellow car missing its door. This car is two vehicles from the cutscene tanker truck, and right after the pickup truck with beer inside.