Tilly the elephant is taking her morning stroll when she notices something strange on the horizon. Is it another elephant? The newcomer has a trunk and tail, but he's a very curious shade of green. Tank, on the other hand, notices an odd-looking creature approaching. It has a barrel and a turret, like Tank, but is a curious shade of blue. Is it a new enemy tank? Tank's alarm sounds and he goes BOOM, scaring Tilly off. But when Tilly returns with a flower, Tank begins to understand that she might not be an enemy at all.