As they collaborate on a groundbreaking research project combining their expertise in decision-making under pressure and game theory, Elin and Soren's relationship evolves from reluctant colleagues to friends and eventually to lovers. Their budding romance is tested when Soren accepts a year-long visiting professorship at MIT, forcing them to maintain their personal and professional relationship long-distance. Throughout the year, they face challenges in their research and relationship but ultimately grow stronger. Upon Soren's return, they marry and continue to balance their academic careers with their personal life. The birth of their daughter, Freya, presents new challenges and joys as they learn to juggle parenthood with their research. They reaffirm their love and partnership, viewing their life together as the most significant experiment of all – one that continues to yield beautiful results.