In today's society, free love is branded impulsive and high-risk, while mainstream opinion celebrates "data matching and rational partner selection." When young people come of age, their relationship data is compulsorily entered into the system, which automatically matches them with the optimal partner. Once both confirm, it counts as a signed contract—breaking it privately goes on your social credit record and wrecks your life. Barely 18, Lynn Carter stumbles into love with the handsome and wealthy Drew Hale. Faced with everyone's obstruction and the data's ruthless provocations, what sacrifices will they make?