The male protagonist Lin Chen was adopted by the mysterious outsider "Xuan Jizi" from a young age in the hidden valley "Luoxian Valley" and grew up with nine senior sisters with stunning looks and different personalities. The senior sister Su Qinghan is five years older than him and is a calm and reliable royal sister; the junior sister Chu Yao is only one day older than him and is a sweet girl who is clingy and loves to act coquettishly; the other senior sisters have their own characteristics - the second senior sister Ye Wanqing is as gentle as water and the fourth senior sister Qin Lan The sassy and fiery one, the sixth senior sister Ling Xue, who is cold and pure... The nine of them took great care of Lin Chen. As they got along day and night, their family affection gradually became mixed with the girl's concerns; the senior sisters also developed ignorant feelings towards Lin Chen in their blushing and heart-pounding interactions.
