Pocoyo, Pato and Elly are building a tower and they're all taking turns to add a block to the top. They want to make their tower really, really tall, but someone keeps making it topple over ...Lift the flaps to find out who. Poor Elly has caught a cold and she keeps sneezing! Pato is getting a little bit cross, but together the friends can all help to re-build the tower. And Elly can have a good rest in bed until she feels a bit better!