Synopsis?
There isn't one. No, no, look below:
Who in Chang'an doesn't know that Minister He has a pair of twins?
Who in Chang'an doesn't know that the elder He sibling spoils his little sister rotten?
In front of Minister He and his wife:
“Little sister, this pear is big and yellow. Here, your brother will let you have it.”
“No, no, dear big brother. I'm the younger one. How could I take something you wanted?”
“You eat it.”
“No, you eat it.”
Ah, such loving siblings. The He parents were deeply pleased.
Behind Minister He and his wife:
The elder He sibling polished off the pears, peaches, grapes, lychees, mangosteens...
“You old thing, have some respect for your elders! Are you really going to leave me nothing?”
A father and daughter (not really) transmigrate and become siblings (not really).
“You call me your brother? No! Call me Dad!”