Piloting Atlas Destroyer with Mei and Boy in tow, Hayley and Taylor continue their journey to Sydney, but first, they must get past a bloodthirsty cult.
Boy's transformation into a Kaiju alarms Taylor and Mei, but Hayley wants to keep caring for him. A group of mysterious women attempts to kidnap Boy.
With Boy gravely injured, Hayley, Taylor and Mei pilot the Jaeger toward a valley full of Kaiju, where a supposed Kaiju whisperer might be able to help.
The Atlas Destroyer gets chased into the territory of the Sisters of the Kaiju, where Hayley, Taylor and Mei argue about what should be done with Boy.
After successfully catching up with the Atlas Destroyer, Shane offers Hayley and Taylor a trade: the Jaeger for something they desperately want.
As Hayley and Taylor's mother tries to resist the High Priestess, the group plots to rescue Boy before his mind is permanently turned against them.
When Boy falls under the spell of the Sisters and transforms into a Kaiju bent on destroying the Atlas Destroyer, a surprising ally comes to its aid.
With creatures close behind, Hayley, Taylor, Mei and Boy race to the safety of Sydney Base, but the Sisters call upon a Category VI Kaiju to stop them.