After failing her college entrance exam and struggling in her career, Gu Xuejiao is unexpectedly sent back to her high school years. Determined to change her fate, she shifts her focus from love to success, prioritizing academics and career ambitions. Along the way, she finds herself in a transformative romance where both partners inspire each other to grow.
In 2024, when Gu Xue Jiao, a graduate from a non-prestigious university, fails to land a high-level position, she confronts CEO Lin Zhi Hua. The two get into a heated argument as the lift suddenly plummets. When she wakes up, her life has restarted, and she is back at 18.
Gu Xue Jiao tries to convince Lin Zhi Hua to tutor her. Lin Zhi Hua puts together a list of out-of-print review materials that are practically impossible to find and demands that she gather them all before he will tutor her. Gu Xue Jiao accepts the challenge.
Gu Xue Jiao recalls how Gu Shuo listened to insider information and bought stocks during a parent-teacher meeting in her previous life, leading to the family's bankruptcy. So Gu Xue Jiao decides to hide the parent-teacher meeting from her father and find someone else to take his place.
Gu Xue Jiao is accused of being responsible for the conflict between the two classes. She stands her ground and cleverly resolves the issue using her previous workplace experience.
Gao Rui wakes up to find Lin Zhi Hua in a completely different state than before. To help Lin Zhi Hua regain his confidence, Gu Xue Jiao goes to great lengths to persuade him to return to his alma mater to give a lecture.
Everyone gathers on the old rooftop of Gu Xue Jiao's house for a party to celebrate her ranking in the top 100. Lin Zhi Hua promises to continue tutoring Gu Xue Jiao until the college entrance exam is over, bringing the two of them closer together.
The landlord informs Gu Xue Jiao that he's selling the house she and her family lives in. Gu Xue Jiao knows that the house will be demolished the following year and they will receive a large compensation for the demolition, so she suggests that her parents buy the house.
Lin Zhi Hua supports Gu Xue Jiao in applying to Jinghai University and takes her to the university laboratory to sort out materials. Gu Xue Jiao becomes more and more determined that Jinghai University is her dream.
By a sheer twist of fate, Gu Xue Jiao meets Lin Zhi Hua's mom and discovers his unhappy childhood.
Gu Xue Jiao gets lost in the mountains, and through roaring wind and pouring rain, Lin Zhi Hua rushes to her rescue.
Lin Zhi Hua tricked Gu Xue Jiao to go downstairs under the pretext of military training, but in fact it was to give her a birthday surprise late at night.
Gu Xue Jiao volunteers to fix a computer problem during Professor Tan's class, leaving a deep impression on him. He agrees to let her join the lab.
Lin Zhi Hua is about to head abroad, so the lab holds a farewell party for him. Gu Xue Jiao accepts the invitation to attend.
Gu Xue Jiao keeps a social distance from Lin Zhi Hua but she can't help wanting to know what he's doing.
Lin Zhi Hua and Gu Xue Jiao team up working on IT. When no one is around, they get all lovey-dovey. Yet, despite being cautious, they nearly get found out.
While Gu Xue Jiao and Lin Zhi Hua are celebrating the signing of the contract, Gao Rui and Lin Zhi Yue show up unexpectedly and changes the atmosphere. Ms. Zheng tricks Lin Zhi Hua and the latter pretends to have given up while contacting other entrepreneurs secretly.
Gu Xue Jiao signs up for the National Intelligent Security Competition, determined to prove Jinghai University's technological autonomy. The newly formed team consists of outstanding members but lacks unity. While preparing for the face-off, a power outage occurs, and they discover Lin Jia Dong is behind it, sparking a silent war between the two teams.
Before the in-house showdown begins, the source code of Gu Xue Jiao's team gets leaked.
Gu Xue Jiao forces Ms. Zheng to acknowledge Jinghai University's technological achievements. Humiliated and enraged, Ms. Zheng seeks to strip Jinghai University of its championship title. While Lin Zhi Hua struggles with whether to confess his reincarnated identity, Gu Xue Jiao unexpectedly learns of it and begins to harbor doubts.
Lin Jia Dong is suspected of being a spy, but Gu Xue Jiao expresses her trust in him. Lin Zhi Hua signs an agreement with B and C, much to Gu Xue Jiao's surprise. The two of them come clean to each other about their 'reborn' identities and reconcile.
Yi Tianyu tries new tactics to get close to Gu Xuejiao. Lin Zhihua secretly investigates Yi Tianyu. Lin Jiadong pretends to defect to Yi Tianyu but is secretly working undercover for Lin Zhihua.
Gu Xuejiao goes to Yi Tianyu's place to uncover the truth of the accident. She tries to collect evidence from Yi Tianyu's phone but is caught red-handed. Yi Tianyu prevents her from leaving.
With the accident briefing fast approaching, Lin Zhihua convinces Si Qi at the last minute to testify against Yi Tianyu. This ordeal strengthens Gu Xuejiao and Lin Zhihua's relationship. Lin Zhihua surprises her with a marriage proposal.
