A car accident on a rainy night made the cold and tenacious Su Wanting become the most dazzling light in the life of the handsome and paranoid Yang Xiao.
Two years later, at City A University, the gears of fate turned again. Yang Xiao came here to repay his kindness and moved his heart. He worked step by step to break into Su Wanting's world. His enthusiasm was like fire, but when she trusted him, he was completely shattered by the words "gratitude, not love".
When Su Wanting's family encounters great changes, and the hypocrite senior student's true colors are revealed, and he is desperate, Yang Xiao holds a piece of marriage contract in his hand, and practices possession in the name of redemption. "Sign it and I'll help you." The contract lasted for three years, and she had to fulfill all her obligations as a wife. In order to save her father, Su Wanting stepped into the apartment in Xinghe Bay and also stepped into the cage in the name of love.
Living together under the same roof, he made up for his guilt with endless love, but she was heartbroken because of her miserable beginning. When paranoid possessiveness collides fiercely with independent dignity, and when the expiration date of the contract gradually approaches... Will this marriage, which began with an unequal transaction, lead to a reconciliation after breaking up, or will it be a relief to let go of each other and be content with each other?
This is a battle about love, dignity, growth and redemption. See how the stubborn cold moonlight illuminates the dazzling galaxy of paranoia, and finally find the true freedom and peace that belong to each other.