The ultimatume kung fu panda chapter 1 The appearance of master Akonou
One day po the dragon warrior was at the jade place sparring with Tigeress who had recently told Po about her feelings that she had for him. But as it turn out karma had other ideas because out of the blue the valley of peace was in a panic as an enormously large foot seem to appear out of nowhere though the people of the valley of peace had been feeling tremors they thought nothing of it that was until the master of the mountain of giants appeared. He was looking for the dragon warrior to tell him he needed his help because the terror known as Aku had returned.