Surviving Granny's attempt on his life, Crichton is attacked by Oo-nii, who is convinced that Crichton intends to give the probes to Grayza. D'Argo and Sikozu arrive just in time, armed with a plan to get everyone off the planet. They convince Crichton to keep Grayza occupied - however he likes.

Sikozu seems to have thwarted the escape when she is brought before Grayza and confesses all. After witnessing her betrayal, Crichton accuses Grayza of being a mere puppet in Scorpius' master plan. In response, Grayza executes Scorpius in Crichton�s presence.

Suddenly, the 'magnetic summer' kicks in, with conditions set to become deadly within arns. As planned, Rygel convinces the old pilot and Elack to crashland onto the Peackeeper ships - allowing Crichton and the others to flee the planet.

Crichton extricates himself from Grayza's clutches while Jool, Chiana and Noranti free themselves from their cell, with Sikozu's help. Everyone makes their way to D'Argo's ship, taking off just as Elack finishes his heroic death plunge.

Two Marauders are destroyed, but Grayza and Braca use the last to pursue D'Argo's ship. D'Argo manages to throw Grayza and Braca off the scent by firing off a satellite probe as a decoy, but his ship has been crippled by the explosion and is forced to return to Arnessk.

In the face of the worsening magnetics, the crew's only choice is to find and use the Darnaz probes to return the planet's atmosphere to its proper state.

Running into Oo-nii, Crichton learns that he and Instructor Vella had planned to sell the Darnaz Triangle as a weapon. Oo-nii then reveals his true strength and forces Crichton to disclose the last probe's location. Holding it, he leaps into the sea. Crichton is forced to follow, barely able to breathe, let alone fight this formidable foe.

With the help of Chiana, Oo-nii is defeated and the probe repossessed. With no time to spare, Crichton, Chiana and Jool manage to activate the probes, which reverse the damage they did so long ago. Not only that, but the lost temple of Arnessk reappears, having been somehow caught in time.