Rebecca explains the importance of finding Isiah and sending him through the portal. If he doesn't go through, Gavin and Eve won't meet.

That means Izzy and Josh won't be born and they'd die in the current timeline.

Sam and Riley arrived to help Rebecca.

Josh is having a hard time believing all this.

Lilly tries to encourage Veronica to do better so people will see her as she does. Veronica hears Scott talk about finding a cow and decides to help.

Josh finds Isiah and saves him from a sabertooth tiger. Silas sees Eve, Josh, and the group.

Ty got worse while and Paara were searching. She healed him and they kissed.

Isiah slipped and thought Levi was Josh's dad. The kid does not want to leave his family and doesn't like Eve's plan.

Gavin is relieved to have answers but wants to get Ella to believe too. Izzy suggests proof, so they head to the dig site, and Gavin finds a rock with a design Ella painted.

Scott got Veronica to open up about her past. Then, they found the cow together, and he even gave some of the credit.

Josh confronts Levi about his affair with Eve, but Levi thought he meant the affair before the sinkhole.

Ella recognizes the rock Gavin brought, and we see a memory of her as Lilly.

Eve is torn. She wants Isiah to make it through the portal, but she doesn't want Silas to kill Josh and Levi.

Ella shows Gavin and company a map Rebecca gave Lilly to give to Isiah. All the sinkholes are marked.

Eve leaves Isiah in the woods to look for Josh.