Quick recap
Five years after Chicago, humans treat every Transformer as an enemy. Cemetery Wind, Harold Attinger's rogue CIA unit, hunts the Autobots with help from Lockdown, a bounty hunter working for the mysterious Creators, who kills Ratchet. In Texas, struggling inventor Cade Yeager finds a badly damaged Optimus Prime and decides to fix him, putting Cade and his daughter Tessa in the government's crosshairs. Joshua Joyce's company KSI uses Megatron's remains to build robot soldiers like Galvatron, who breaks free: he's Megatron reborn. Lockdown captures Optimus and Tessa. In Hong Kong, Optimus wins over the Dinobots by force, kills Attinger and Lockdown, and Galvatron escapes, vowing to return. Optimus heads into space with the Seed and a message for the Creators: he's coming for them.