The new documentary from filmmaker Billy Corben and rakontur, the creators of Cocaine Cowboys and The U, looks to be one of the best pot documentaries ever.

​”This movie is based in part on my book,” Robert Platshorn, America’s longest-serving pot prisoner and author of Black Tuna Diaries , told

“I’m in it and it tells the story of how good Colombian weed started the current pot revolution,” Platshorn told us.

“It took a small army of gutsy South Florida smugglers to start today’s marijuana revolution,” Platshorn said. “We paid the price, but our Colombian Gold started the wave for medical marijuana and now legalization.”

“Square Grouper tells the story in our own words,” Platshorn said.