Quack is utterly flummoxed when a big rock plants itself in a very inconsiderate spot. Peep, Quack, and Chirp discover their shadows-then use them to teach Tom (that trouble-making cat!) a lesson. Then, Pato and Elly are arguing over their blocks when Caterpillar and Baby Bird walk past with presents for Pato. Oh no! Pocoyo and Elly have forgotten Pato's birthday.