The document describes a code retreat event where participants will practice test-driven development and pair programming. The event involves 6 coding sessions focused on implementing tic-tac-toe, each lasting 40 minutes with a 10-15 minute retrospective afterwards. Participants are instructed to pair program, deleting code between sessions. Retrospectives involve reflecting on the session and providing tips. Coding challenges are introduced such as prohibiting loops/ifs or limiting method size. The goal is to improve skills through deliberate practice and exploring new techniques outside normal work constraints.