Entertainment industry working girl Xia Lan is clear-headed, independent, and beautiful without realizing it. After breaking up with her top-traffic ex, she urgently needs a contract marriage to start a new life, intending to find someone for an agreement marriage, but mistakenly identifies the wrong person by a twist of fate. Encountering the gentle-looking and deeply thoughtful mixed-race heir Bai Yu, Xia Lan's line, Do you dare marry me?, leads the two to set a one-year marriage contract, agreeing to not interfere with each other after marriage and part ways peacefully when it expires. When getting the marriage certificate, Bai Yu only heard clearly the two words 'get married'. Accompanying each other day and night, the two gradually develop feelings. When the one-year term expires, Xia Lan proposes to fulfill the marriage contract, but Bai Yu tells her that marriage is valued in staying together, with no separation, only the rest of life. Contract turns into true love, sweet throughout without bitterness.