El misterio del papel de váter volador (Hermanas Coscorrón. Agencia de investigación)

This time they have to travel to New York, where the International Granny Detective Conference, the world's most important congress for investigating grandmothers, is being held. The Plaza Hotel is packed with celebrities: the Tiatrappo sisters from Italy, the Akí Mekedo sisters from Japan, even Donald Trump himself. But amidst all the commotion, there's a mystery: the hotel's toilet paper has vanished without a trace. The Coscorrón sisters, Marcelo, and his new friend Max set out on the trail of a culprit. Who could it be?