When the autoclave (instrument sterilizer) explodes in O.R., Klinger pushes Charles out of the line of fire just in time, but B.J. catches part of the blast and has a serious arm injury. For saving his life, Charles declares he is fully indebted to Maxwell Klinger and becomes his personal assistant. But after several days of bowing to Klinger's every command, Charles begins to wish he HAD been killed. Meanwhile, Hawkeye doesn't like the doctor called in to help treat B.J., who refuses to admit there is anything wrong with him.