La | Brea - Season 3

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.”

We open moments after Season 2’s finale. Eve (Natalie Zea) watches in horror as the portal to 2021 closes, leaving her son Josh (Jack Martin) stranded on the other side. Meanwhile, Gavin (Eoin Macken) clutches his head — a new, violent vision floods his mind: not of the past, but of a future Los Angeles consumed by a second, deadlier sinkhole event.

Gavin, Ty, and Riley stage a rescue. In the fight, Riley is fatally wounded — but before she dies, she touches the bunker’s core and sees the entire history of the rifts. Her final words: “It’s not a machine. It’s a grave .” La Brea - Season 3

Josh discovers another survivor trapped in 2021: (recurring actor), a scientist from the 1950s who stepped through a rift decades ago and has been hiding in plain sight. Paulo reveals the truth: The rifts are caused by a decaying “temporal anchor” buried deep beneath La Brea, a device built by an advanced prehistoric civilization (the “Ancestors”). If it fails, all of time collapses.

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. 10,000 years later, in the cavern, an archaeologist

Gavin refuses. But Eve whispers: “I already died in one timeline to save you. Let me save everyone now.”

Josh must reopen the rift — but doing so will cost him years of his life. Meanwhile, Gavin (Eoin Macken) clutches his head —

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.”