Flipping Land With Option Agreements and rezoneing

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Ok so I have done several wholesale deals and have known nothing about land recently i heard about a guy that got a few acres of land under an option, had it rezoned and flipped it to a company and made 4 million in 3 months. I went down to permit/ zoning in my county and got current and future zoning plans so I know whats going on in my area. I KEEP HEARING THAT Option+Rezoning= Big Profit. Now that i have all present and future zoning for my county. What is the next step? Should I call realtors and get all land sales in the last 6 months?

The guy contacted an older man with some land ( 5 acers) put it under option on a 2 year contract then starting calling hotel owners and retail center owner. made 4 mil in 6 months on the side.

The logic makes sense but what do I need to do to make this happen. Im not lazy and no fear to make this happen. All comments are appreciated