Robin and the Super Friends throw a surprise Batman Day party, but the villains try their hardest to crash it.
When he steals all the power pads in Gotham City and replaces them with purple Joker prank pads Batman must get creative to save the day. With the help of some special friends, can Batman defeat the Joker and restore the Imaginext power to the city? Will the day be saved, or will Joker get the last laugh?