Bart founds a new passion, drumming! He gets really good, really quickly, and before you know it, he made it into the big times and is playing with all of the best bands. He strikes fame and riches quickly and without really trying. This irks Lisa to no end, she is ridiculously jealous. She reaches her tipping point and lashes out at Bart. Lisa attacks Bart and Breaks his arm! He can no longer drum. Bart is taken to the Hospital, and a cast is placed on the broken arm. Bart confronts Lisa about what happened and she laughs maniacally. Lisa is twisted.