Sammy and Brooklynn resume their quest to find the mystery behind MantahCorp's operations on Nublar, and Sammy has had enough. Brooklynn realizes her mistake and apologizes, following Sammy's lead to a secret facility near the Raptor Paddock.
Meanwhile, Yaz goes for a run and comes back to find that Darius put Kenji in charge of supplies...and that Ben is nowhere to be seen. After a brief search, they find him and Bumpy mingling with a herd of Ankylosaurs, but Ben casts doubt on whether or not their friend group will last much longer themselves.
Sammy and Brooklynn's rush back to camp behind a herd of stampeding dinosaurs who are also aware of the new threat the girls uncovered: the Scorpios Rex, a terrifying hybrid that is rapidly approaching with the fury of the storm that Yaz realizes they're trapped with. The kids fortify their base while Yaz fortifies herself and pushes Sammy away...but when the Scorpios passes through their home, Sammy is mortally wounded. Hearing of an antidote that Brooklynn learned of earlier, Yaz races across the island to retrieve it...or to be as far away from her friend's death as possible.
Sammy slips slowly away as Brooklynn and Kenji tend to her, and Yaz fights tooth and nail to retrieve the antidote..assisted on her way back by Ben and Darius, who blow up Lookout Point as a distraction. As the last seconds slip away, Yaz confesses her true feelings to Sammy...and the farmgirl wakes up to see a shining, smiling face of love.