The arrival of a mysterious comet heralds impending danger from enemies both old and new. As Ace helps the Doctor defend Earth, she is confronted with a dangerous question..."Doctor Who?"

宝琳陪同迈克去一个镇子参加参加一场板球比赛。迈克在场上比赛时，宝琳感到无聊去了镇子上闲逛。在镇上的火车站，多嘴、驼背的站长请她喝茶，后来站长的助手在她面前杀了一只兔子使她心烦地离开了。在返回板球赛场的路上，宝琳在穿过苹果园时被侵犯了……