In 1930, before Errol Flynn (Thomas Cocquerel) became one of the biggest movie stars in Hollywood, a young Errol, braving cannibals and crocodiles, searched the jungles of Papua New Guinea for his Eldorado. While serving as a guide for a Hollywood producer, Errol discovers a map on a dead prospector that he believes will lead to a fortune in gold.
Back on the streets of Depression-era Sydney, Flynn rounds up a ragtag crew to help him find the gold, including Rx, a Canadian ex-bootlegger, Dook, an English gentleman handy with a pistol and Charlie, a grizzled old salt. After stealing the Sirocco, a yacht belonging to Chinese Opium smugglers, Flynn and crew set sail.
They quickly learn just how perilous a voyage up the Australian east coast can be, running afoul of drunken cowboys, corrupt cops and local thugs before being intercepted by the Chinese smugglers, who are hell-bent on retrieving their Sirocco and the several pounds of opium stashed in the hold.
As Flynn and crew make a final dash for New Guinea they encounter their greatest foe yet, nature itself and sail straight into a treacherous reef.
In Like Flynn is a mythical and satirical coming-of-age story about four men on a journey to find hope, adventure and fortune in an age when the world was spiralling into despair.