Dragonball: Rewritten

A routine planet purging became a near-death experience for Vegeta, one that should've ended him up in a healing tank. But a stray beam from the planet below knocked him off course, heading towards a wayward planet with a weird name: Earth.

A "what if Vegeta met Goku when he was training for 3 years on Kami's Lookout" kakavege story.