Quick recap
Some time after beating Shen, Po fakes an emergency to drag Tigress and Mantis to an exhibit on the masters of Gongmen: Thundering Rhino, Storming Ox and Croc. There he tells how the three met. In Jinzhou, they were street fighters when Master Oogway saw talent in them. The Wu Sisters had escaped, and Oogway talked the trio into helping him catch them. On the road, each of them only cared about himself. Oogway falls into a river of lava, and the trio thinks he's dead. When they find a ruined rabbit village, the three decide to fight for free and, together, they beat the Wu Sisters. Oogway turns up alive and praises the new masters.
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