Underwater hockey, also called octopush, gets played on the bottom of a swimming pool by two teams pushing a puck across the tile with foot-long sticks while holding their breath. Players wear fins, masks, and snorkels, diving down for short bursts of play before surfacing for air, then dropping back to contest the puck again. The film follows a handful of dedicated players through interviews and underwater camera work that captures the game from below the surface, where the actual contest happens and spectators normally can't see it. They talk about how they found the sport, why it never caught on the way soccer or ice hockey did, and what keeps them coming back to a pool deck community that stays small on purpose. The film also touches on the sport's history and how it spread from local pools to a wider following, though it stays a niche activity rather than a mainstream one.