A possible concise summary is:
This is a story of Lisa and Britney, two sisters who were given away by their poor and greedy parents to a rich couple, the Canaans, who pretended to be their real parents after they lost their memory in an accident. Lisa and Britney lived a luxurious life with the Canaans, but they also faced challenges from their schoolmates, their birth parents, and their own rivalry. Eventually, they discovered the truth about their adoption and decided to stay with the Canaans, who loved them as their own daughters. They became successful and happy, while their biological parents were left out of their lives.
Some possible key facts extracted from the text are:
- 1. The narrator woke up in a mansion with a wealthy couple claiming to be her parents after losing her memory.
- 2. The couple's name was Canan and they had a handsome cousin named Oliver who befriended the narrator.
- 3. The narrator's real name was Lisa and she had a sister named Britney who was given to the Canans by their poor mother for money.
- 4. Britney became the narrator's rival at school and tried to take everything from her, including Oliver and her popularity.
- 5. The narrator regained her memory after being hit by a tennis ball and confronted her biological parents and the Canans.
- 6. The narrator decided to be adopted by the Canans along with Britney and they lived happily ever after.