Margot grapples with panic on her wedding day. David deals with heartbreak. A chance encounter between the two sets off something unimaginable.

Prompted by a random game, Margot maps out a trip that promises to be liberating. She and David strike a pact, but Candela plants seeds of doubt.

As Margot and David's bond grows, she holds back on expressing her feelings. An intriguing text reveals that she isn't the only one getting attached.

David surprises Margot and their idyllic trip continues, but things don't remain rose-colored for long. A pact is made for their return to Madrid.

The sisters share secrets and future plans. After traveling to Ávila, Margot and David open the door to new possibilities – or do they shut it for good?