Three months after the defeat of Samson Cladsteel, the Responders are now widely accepted as "The Protectors of Earth". But with the arise of a new group of villains and a government organization that's been watching from the shadows, protecting Earth may be a bit more complicated than they realized. Meanwhile, an old enemy makes a shocking retrun.

With the Arbiters still at large and with no way to locate the second piece of the Siphon, Jeremih finally grants the Responders access to the Cladsteel lab that the first piece was stolen from. Meanwhile, Bamboozle-Man, Jesus, and Zip are sent to investigate a lead along with three new heroes the WPC has their eyes on.

With the Arbiters one one piece away from completing the Siphon, the Responders are shocked to hear that they wish to have a tea party in a national park.

With the power core of the Siphon destroyed, the Arbiters attempt a dangerous heist that puts the entire Secret City along with Fiction City at risk.

With the Frost Monger finally being released, the Responders and the Arbiters must temporarily join forces to save the city.

The battle between the Responders and the Arbiters finally come to a head with the fate of everyone in the Aegis and the Hole hanging in the balance.