Cronus has restored Olympus, and he is treating the Knights inside it like intruders in his kingdom. Britney, Robyn, and Liesel are trying to fight him while he smashes through…

Cronus has restored Olympus, and he is treating the Knights inside it like intruders in his kingdom. Britney, Robyn, and Liesel are trying to fight him while he smashes through their attacks and keeps reminding them how far beneath him he thinks they are. Elsewhere, Sela repairs Neptune's trident with her magic. She has a plan, but it needs everyone. Neptune gets his weapon back, and they head in to join a fight that is already going wrong. Cronus gets hold of Liesel. Robyn tries to help her and gets thrown from Olympus for it. Sela, Nathan, and Neptune arrive in time to catch Robyn, and Sela finally learns that the people she thought died in the Underworld survived. Her first question is about Liesel. She reaches her just in time to see Cronus drive a scythe through her. Liesel dies in front of her. Sela has barely learned that her friend survived the first disaster before losing her again, and for a moment she cannot move past what she has seen. Robyn keeps fighting. She puts arrows into Cronus's hand and gets one of the scythes away from him. He is furious that she has even touched it. Robyn and Britney start throwing it between them, keeping it out of his reach while he tries to take it back. Sela takes over with the stolen weapon and flies away, baiting Cronus into following her. She sends Robyn back to help Britney, who is hurt and still has the Hydra to deal with. This time Britney chooses to change into the wolf herself. Robyn stays beside her as they fight through the creatures around them. Nathan sends up a flare. Shang and Ciampo get the others to take cover, Neptune carries Hades out of danger, and Sela gives the signal. Neptune raises a huge wall of seawater around Cronus and brings it crashing down on him. Olympus is battered by the wave. Sela stays above it with the scythe she has been carrying, and once the water settles, she breaks that weapon with her magic. Cronus is left powerless, crawling out of the wreckage. Sela tells Neptune to take him back to Tartarus. Robyn objects to sparing him, but Sela will not kill him now that he can no longer fight back. A gunshot settles the argument before Cronus can be taken anywhere. Liesel is standing there with her gun. She is alive again, and she has just shot him in the head. Neptune explains what happened. The scythes manipulate time, and breaking one has broken their spell. Olympus falls again, the dead are restored, and the creatures are returned to Tartarus. Liesel's death was undone along with the other effects of Cronus's magic. The Knights have stopped him, and the team has come through alive. Hades is already looking at what remains of his father's weapons. Liesel has something she needs to tell Sela about the time between her death and her return.