La Brea - Season — 3

Back in 2021, Josh finds himself alone in a quarantined L.A. The sinkhole site is now a high-security government lab run by a ruthless new director, (new series regular, played by Nimrat Kaur). She believes Josh’s DNA — part of Gavin’s “rift-touched” bloodline — is the key to controlling the ancient anomalies.

Inside, they find frozen soldiers and a journal belonging to a scientist named Dr. Helena Frost. Her final entry: “The rifts aren’t accidents. They’re a weapon. And they’re waking up.” La Brea - Season 3

Riley’s vision guides them to an underground cavern beneath the original sinkhole — the resting place of the first Ancestor, a being who sacrificed herself to stabilize time. The “temporal anchor” is her preserved heart, pulsing with energy. Back in 2021, Josh finds himself alone in a quarantined L

10,000 years later, in the cavern, an archaeologist discovers the heart. She touches it — and hears Eve’s voice: “Tell them we made it home.” Inside, they find frozen soldiers and a journal

But Gavin pauses at the edge of the rift, looking back. He sees a vision of Eve, smiling, standing beside the heart. He whispers, “I’ll find you again. In every time.”

Josh finally arrives through a collapsing rift, aged ten years (now played by a new actor, mid-30s). He looks at Gavin and Eve: “Dad… I saw how this ends. Only one of you can go home. The rest have to stay in the past — or time breaks.”