In his past life, Ethan Reed was a special forces soldier. Reborn as a low-ranking servant in the Hartwell Family, he plans to live quietly until his modern knowledge helps him create valuable dyes and save the family from ruin. As he rises through the ranks, Ethan becomes entangled with the eldest daughter Elena Hartwell, Catherine Blake, maid Ivy, and the mysterious Crown Princess Serena Vale. He outsmarts powerful families, tops the imperial exams, and helps establish an elite royal guard to restore order at court. Just when Ethan plans to return south, Lydia Hartwell shocks everyone by publicly confessing her love and asking to marry him.