 Mr. Burns almost drowns while taking a bath after Smithers puts a <unk> on his head that weighs him down . Later , after realizing that no one will carry on his legacy when he dies , Burns decides to try to find an heir that will inherit his vast fortune . He holds an audition and many of the boys in Springfield try out , including Nelson <unk> , Martin Prince , and Milhouse Van <unk> . Bart and Lisa also try out and fail ; Lisa because she is a girl , and Bart because he read Homer 's badly @-@ <unk> proposal . Angry and humiliated after the audition ends , only made worse by Burns kicking him in the butt with a mechanical boot , Bart pays him back by <unk> his mansion . Mr. Burns <unk> of Bart 's malevolence and decides to accept him as his heir . 
