Misteriosa Fira dels Invents

The Extracurricular Detectives are excited: they require your presence at the Inventions Fair! They've always been entertained by this event, but what awaits them is anything but festive: the smart building that houses it has gone crazy! Or so it seems, because their automatic machines and robots act in an irregular and dangerous way. Its director is convinced that someone is trying to boycott the fair. Our heroes will have a few days to discover what is happening there, while they face inventors, androids and... Ninjas? Will they be able to unravel the cybernetic enigma and emerge unscathed from this risky adventure?