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Husband and father of two Eduard suffers a sudden and devastating tragedy. In his grief, he meets a strange woman who offers him a unique opportunity.

Eduard travels to a second parallel universe to change the fate of his loved ones, but is disturbed by the type of man he is in this alternate reality.

Dr. Everest has Eduard reflect on choices he made right before two critical moments in his life: his father's death, and the first time he met Elisa.

While trying to stop his college-age self from falling for Elisa in 1991, Eduard lands in a situation that could keep him stuck in the wrong universe.

In 1991, Elisa accidentally experiences universe travel and confronts Eduard with her suspicions about his true identity. A different tragedy occurs.

In the present, Òscar reveals to Eduard a secret Clara recently told him, which reminds Eduard of a time when he and Elisa had a critical fight.

Eduard travels to a universe in which Elisa is a renowned singer, living a life very separate from his. But her gain in life means a new loss for him.

Dr. Everest warns Eduard that even a small change can have a great impact, but he ignores her for a second chance at a missed moment with his son.

When Clara and Òscar become convinced Eduard is delusional, he brings them to meet Dr. Everest to prove otherwise. Joan opens up to his son-in-law.

Dr. Everest's mysterious past and scientific endeavors are finally revealed to Eduard, as she shares her own family tragedy.