SINOPSIS DEL LIBRO

<p>Onion O'Brien is in trouble ? again! This time he and the rest of the Five O's are trying to stop the destruction of the Valley, the local waste ground where they hang out. But Mayor Ronald Bump has other ideas ? he wants to build new apartments, and he sets local guards The Ferg and Judge on the children.<br>As if things weren't bad enough, there's a new teacher who's acting very suspiciously. The Five O's can find out his secret if they mana...Seguir leyendo