Following Basque separatist group ETA’s historic ceasefire, Bittori returns to her hometown demanding answers about her late husband Txato’s unresolved murder.

Bittori is visited by her son Xabier and daughter Nerea, who come bearing surprising news. Meanwhile, though their parents no longer speak, an encounter at the hospital reunites Xabier with Miren and Joxian's daughter Arantxa, providing him an opportunity to return something special from their childhood--and further piquing Miren's suspicions as a result.

With Joxe Mari the subject of a massive police hunt, Miren turns to the only person she can trust--Bittori--but unintentionally divulges Txato's secret in the process. Meanwhile, as Nerea and her friends are confronted by the police, Txato and Bittori navigate the fallout of escalating threats from ETA.

While local resentment towards Txato reaches a fever pitch, Joxe Mari's shadowy ETA superiors enlist him to execute a series of hits. Later, news of Txato's murder breaks, and a devasted Bittori's grief deepens as she's warned against having his funeral in town, while Joxian grapples with the death of his friend from a distance.

Arantxa’s budding friendship with Bittori drives her to go behind her mother’s back and reach out to Joxe Mari with an urgent request.

The hunt for Joxe Mari intensifies when he and fellow Oria command members are placed on the Most Wanted Terrorist list. After fulfilling her final promise to Txato, Nerea makes a monumental decision about her future. While Bittori meets with another member of Miren's family in secret, her children have a private meeting of their own.

After secretly tailing the elusive command unit for weeks, the civil guard finally moves in on Oria. Loyalties are tested as Joxe Mari's family struggles to reconcile the doting son and brother they once knew with the man behind bars for horrific acts of terrorism. In present day, Arantxa and Nerea reconnect for the first time in years.