Homer becomes a masked vigilante known as "The Pie Man" when he pies Springfield's miscreants. Lisa asks him to retire when she discovers what he is up to, although she respects what he is doing. After Homer is pushed too far by Mr. Burns, he comes out of retirement for one last time, but unfortunately, Mr. Burns discovers what he is doing and blackmails him into pieing people that he does not like. Homer agrees, but when his next target is to be the Dalai Lama, Homer faces the music and unmasks himself.