In the third episode of "Bank Under Siege," titled "Ticktock, Ticktock," the narrative unfolds with a poignant flashback that delves into the personal history of Maider, the ambitious journalist. We see a younger Maider, then a law student, confiding in her father, a newspaper editor, about her aspirations to become a journalist. The scene is heart-wrenching as Maider's father is tragically killed in a car bomb explosion after she leaves the vehicle, setting the stage for Maider's determination and resilience in the face of adversity.

The episode fast-forwards to the present, where Maider is hard at work on her first report, impressing her editor, Isabel. Meanwhile, the special operations team has made their way through the sewers to the bank's wall, only to discover it sealed shut, indicating that the robbers have no escape route.
Captain Lopez receives a lead from an informer about a bar owner who might have information about the siege. Lopez and his team take the man into custody, and he reluctantly reveals that a mysterious couple frequented his bar prior to the siege. This revelation adds a layer of intrigue to the unfolding events.
Inside the bank, the robbers, led by Jose, face a critical decision: whether to surrender or to continue pressuring the government. A vote is taken, and fortunately for Jose, the majority opt to wait, buying more time in their standoff.
The CESID president, Manglano, proposes a risky plan to send the robbers and some hostages via two buses to a plane. Once on board, special operations could take them down. However, the general insists on confirming that the men inside the bank are not Civil Guards before proceeding.
As the night falls, Isabel takes Maider out for drinks, where Maider encounters Berni and apologizes for her harshness, expressing remorse for not knowing about his daughter's tragic death. This moment humanizes the characters and adds depth to their relationship.
Back at the bank, Jose allows the hostages to speak to their families, hoping this will put pressure on the government to find a solution. Meanwhile, Lopez, suspicious that the bar owner knows more, orders his men to follow him. Their hunch pays off as the bar owner meets with the same woman who called the radio station, and Lopez realizes that the man inside the bank is the same one who robbed the Hispano-American Bank.
Further revelations come to light as Lopez learns that the bar owner, Manuel Vilagran, is actually a spy for Carrero Blanco, and he now meets with Manglano to deliver some documents. This twist adds a layer of political intrigue to the heist.
Jose's new demand is for the robbers to leave in the armored vehicles along with some hostages to the airport. He warns that if the special operations attack the plane, the hostages will die. As the special ops team stealthily make their way to the rooftop, one of the robbers spots them and rushes to inform Jose. In response, Jose takes the bank director hostage and positions himself at the front door, ready to face the impending confrontation.
"Ticktock, Ticktock" is a thrilling installment of "Bank Under Siege" that ratchets up the tension and stakes. The episode masterfully weaves together personal narratives with the larger political landscape, creating a gripping story that keeps viewers on the edge of their seats. As the clock ticks, the fates of the hostages, the robbers, and the nation's stability hang in the balance, setting the stage for a climactic conclusion.