Jiang Mo, a national submarine engineer, was framed by his adoptive brother Jiang Ping in his previous life, and was falsely accused of treason and died tragically in prison. After his rebirth, he returned to the day he was framed and exposed Jiang Ping's conspiracy to steal secrets by live broadcasting in a milk tea shop to create an alibi. Faced with family misunderstandings and an investigation by the Security Bureau, Jiang Mo worked step by step, using the live broadcast audience as evidence, to expose Jiang Ping's crime of disguising his identity and forging evidence. He finally cleared Jiang Ping's grievances and brought the real culprit to justice. He broke with the profit-seeking Jiang family, protected state secrets and his grandmother's family ties, and opened a new chapter of scientific research to serve the country.
