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CEO Pei Haoran, to fulfill his grandfather's wish for a great-grandchild, registers his marriage with Meng Wanqing, who already has twins, Huanhuan and Lele. He disguises himself as a delivery man to give the marriage certificate to his grandfather, who is delighted and surprised but immediately demands to meet his granddaughter-in-law. Pei Haoran makes excuses, saying Meng Wanqing is busy supporting the family, which angers his grandfather, who then kicks him out and orders him to bring his granddaughter-in-law home. Homeless, Pei Haoran arrives at Meng Wanqing and the children's residence, requesting temporary shelter due to his homelessness, thus setting the stage for their future cohabitation and emotional development.