Humour and science are the main ingredients of this literary proposal, an anthology of fantastical short stories about characters ranging from a space explorer, a chihuahua, a tour guide and a child from another planet. These stories are told by a selection of dedicated, charitable authors, as the funds raised from the sale of the book will be allocated to the Spanish Cancer Association (AECC). This volume features the short story ¡Ya era hora!, by Jordi Escoin, as well as short stories by Lehna Valduciel, Román Sanz Mouta, Melani Abascal, Vale Son D, Annais Lumière, Miguel Diaz-Varela Muñoz, Lynsey Lynwood, Lorena Escobar and C. G. Demian, Beh Sam, Mikel Iruretagoyena, Raúl Campos Valdés, Yolanda Fernández Benito, Nisha Dragwlya and Daniel Pino.