一对老夫妇始终没有小孩，并为此伤心，一日，丈夫挖出了一具人形树根，送给妻子当做小孩取乐，但令人意想不到的是，这具人形树根竟然真的活了起来，夫妇俩欣喜若狂，把它叫做欧提科。欧提科显然是个胃口很好的小孩，一直哭闹着要吃的，老夫妇两人为了喂饱它，花光了所有的钱，但它仍是饥饿地捉了家里的猫吃掉了。尝到肉味道欧提科从此拒绝其他食物，又把偶然进入家中的邮差、路人，还有楼里的邻居都吃掉了。老夫妇又惊又怕，但面对越长越大的欧提科显然没有任何办法，只要任由它吃掉了自己。没了管束的欧提科走到大街上，遇到的活人活物都进了它无底洞一样的胃。在菜地大啖卷心菜后，欧提科睡在了树下，直到愤怒的田地主人老太婆向它举起斧头……When a childless couple learn that they cannot have children, it causes great distress. To ease his wife's pain, the man finds a stump in the backyard and chops it and varnishes it into the shape of a child. However the woman takes the root as her baby and starts to pretend that it is real. When the root takes life they seem to have gained a child; but its appetite is much greater than that of a normal child.