尤莉亚外婆家的楼下是一个老面包房，在面包房里，尤莉亚遇到了老朋友萨多夫尼科夫警官，他居然打扮成一个面包师的模样。警官告诉尤莉亚，他正在寻找一个失踪的秘方，这个秘方可以做出世界上*美味的面包，外国间谍也正在寻找这个秘方。警官交给尤莉亚一个任务，找到外国间谍！尤莉亚能完成这个任务吗？谁会先找到秘方？在这个老面包房里，到底都隐藏着一些什么秘密？
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