Pinky and the Brain #24

Pinky falls in love with Snowball's sister, Cupcake, much to the chagrin of Brain and Snowball, whose plans for taking over the world are threatened by this "Romeo & Juliet" affair. Plus, in 1880's California, Brain has discovered a huge city of gold under a mountain--a lost treasure of the Aztecs! All he needs to do is slowly move in and sell the fortune without gathering undue attention--he doesn't want to start another gold rush! But the Mexican army has made camp nearby and are snooping around. How can he drive them out? Enter the Zorro-like champion--El Cerebro--and his faithful horse, Pinky!