The ruthless Chimera - a new villain with links to Aquaman's past - has arrived to destroy the King of the Seven Seas, and Arthur may not be powerful enough to stop him!

Meanwhile, with threat after threat demanding his attention, it's fallen to Mera to hold Atlantis together, even if most of the city wants her dead! The conspirators hiding in the shadows of the city's darkest reaches can't hide forever - but can Mera get to them before Atlantis comes apart?