Shi Qi, the granddaughter of the renowned Lord Wan Shi of the Western Han Dynasty, is assassinated on the eve of entering the imperial palace and unexpectedly travels a thousand years into the future. She becomes an orphan in the modern Shi family, tasked with watching over the ancestral hall. When she stops the mischievous young master, Shi Jiu, from cutting down the family's ancient tree, she unexpectedly becomes his teacher. Using a thousand years of traditional teachings on etiquette, respect for elders, and filial piety, she sets out to restore the Shi family's declining values. Amid their hilarious daily battles over discipline, the two go from constantly clashing to joining forces to protect their family's legacy, while uncovering the secrets hidden beneath an ancient stone stele.