Just as siblings Esther and Paul Vanhove recruit a group of young people to test their revolutionary soul mate implant, investors drop a bombshell.

While the testers venture out into the world to meet their soul mates, Paul agonizes over Joséphine, and Esther takes a drastic step to help her mom.

As both Esther and Lucas struggle to come to terms with their new realities, Billie helps Ana through a crisis, and Martin begins to act erratically.

With the testers’ lives hanging in the balance, Esther goes to extremes to revive Martin. Meanwhile, Paul and the company prepare for launch day.