This is an illustrated book that begins with a doubt: What am I? Avocado is happy in the supermarket until a girl asks her mother: "Is an avocado a fruit or a vegetable?" Then, Avocado begins to doubt its identity. It doesn't know what it is or what its place is, it gets lost, feels misunderstood, and the more it thinks about it, the more doubts assail it. But, suddenly and fortunately, it meets Tomato. Tomato is a fruit, although many get confused and think it's a vegetable. Tomato is very mature (this tomato is not green at all) and gives Avocado a great lesson. But, above all, it listens to its friend and understands it, in the middle of an oasis of confusion.