Since May 2020, orcas in the Strait of Gibraltar have been ramming sailing boats, targeting rudders until they break apart. The behavior has spread along the Iberian coast and up into the Bay of Biscay, and researchers are still arguing over why. This film gathers marine biologists, whale researchers, and the sailors themselves, some recalling the moment their rudder gave out mid-crossing, to weigh the competing theories: learned behavior passed through a tight-knit pod by imitation, competition with humans over dwindling tuna stocks, stress from heavy shipping traffic and noise pollution, or simply a new form of play among an intelligent, social species that has no natural predators. Footage of orcas circling hulls and their distinctive white eye-patches and triangular dorsal fins sits alongside expert interviews explaining pod structure and communication. No human has been hurt in these encounters so far, but the film treats the mystery as open, a population under strain finding a new, disruptive way to interact with the boats sharing its water.