August 10, 2021: one lone hacker finds a single stupid bug in a cross-chain bridge and drains $610 million in under 15 minutes across Ethereum, BSC, and Polygon. What follows is the most bizarre 72 hours in crypto history — on-chain memes, public Q&A in transaction notes, death threats, a $500k white-hat bounty, and the thief slowly returning every dollar while roasting the team. We break down the exploit line-by-line, the hour-by-hour timeline, why he really gave the money back, and why — four years later — nobody has ever been arrested. The only heist where the robber became a folk hero.