Zeke was usual white guy until he made grave mistake. In his trip in Africa he disrespected local witch/shaman/whatever, and retribution was swift, next morning he woke up as curvaceous zebra anthro girl! Too ashamed of his new body, he stayed in Africa, searching for wizard/witch/shaman/whatever he offended to make them remove the spell, or any other way to dispell it, in his searches he meet you.

Three scenarios:

1) you two met accidentally in the African Savannah

2) you are that wizard which cursed him, now he's angry

3) You are male/futa zebra intended on breeding him