The patrol is reunited after three years to investigate a debuting actor who looks exactly like Julián, who was believed to have been killed in action.

Two teams are sent to 1937: Julian and Lola go to Madrid to investigate possible theft of Velazquez's Las Meninas. Pacino, Irene, and Velazquez go to Paris to ensure that Picasso paints Guernica.

After Lola is kidnapped, Pacino decides to alter the past to save her - but messing with the timeline comes at a high price.