Season 1

A mother with a heart of gold navigates the cutthroat world of private education when her daughter tries to join a celebrity math instructor’s class.

1. 

   1. You and I, the Intersection of Two Universes

   2023-01-14 · 75m

   As competition in her class ramps up, Nam Hae-e anxiously awaits her math score. Choi Chi-yeol is embroiled in a scandal involving one of his students.

2. 

   2. Probability of Encountering Your Enemy at Your Worst

   2023-01-15 · 75m

   Nam Haeng-seon attempts to register Hae-e into The Pride Academy. Desperate for Haeng-seon's food, Chi-yeol visits her store in a disguise.

3. 

   3. Number of Outcomes Where Dislike Becomes Like

   2023-01-21 · 73m

   Haeng-seon begins fawning over Chi-yeol after discovering his true identity. A change in the Pride Academy's schedule creates a stir among the parents.

4. 

   4. Revolt of the Arithmetic Sequence

   2023-01-22 · 69m

   Haeng-seon gets a taste of the vicious politics among the academy's parents. She later goes to great lengths to make things right for Hae-e.

5. 

   5. The Secret Probability Distribution of X and Y

   2023-01-28 · 76m

   Haeng-seon and Chi-yeol work out an arrangement for Hae-e's tutoring. A mysterious tragedy leaves the academy and its parents rattled.

6. 

   6. There Are No Correct Answers in Life, Only Best Answers

   2023-01-29 · 76m

   A painful past comes back to haunt Chi-yeol. Bang Su-a becomes suspicious of Hae-e after finding her secret worksheets on her desk.

7. 

   7. The Very Average Laws of Attraction

   2023-02-04 · 70m

   Hae-e ranks first in her class, causing drama among other parents. Chi-yeol and Haeng-seon grow closer as he spends more time with her family.

8. 

   8. Chance Becomes Fate through Inductive Reasoning

   2023-02-05 · 67m

   Haeng-seon realizes her own feelings after seeing Chi-yeol at the academy. Su-a connects the dots and begins to make sense of Hae-e's recent successes.

9. 

   9. The Butterfly Effect of Our Relationship

   2023-02-11 · 71m

   Chi-yeol and Haeng-seon deal with the fallout after their secret is discovered — forcing the two to confront what it means for them moving forward.

10. 

    10. Emotion, the Variable That Alters Relationships

    2023-02-12 · 72m

    A public revelation leaves Haeng-seon and Chi-yeol's relationship in limbo. Meanwhile, Chi-yeol faces the repercussions of recent events.

11. 

    11. The Functional Relationship of Our Love

    2023-02-18 · 74m

    Tired of her loved ones facing scrutiny, Hae-e makes a bold confession to the world. Haeng-seon and Chi-yeol navigate their road ahead post-scandal.

12. 

    12. Point of Intersection between Comedy and Tragedy

    2023-02-19 · 77m

    A shocking arrest leaves the academy's parents — and Hae-e — concerned. Haeng-seon and Chi-yeol maneuver the days after their first fight.

13. 

    13. How We Approach an Unsolvable Conjecture

    2023-02-25 · 74m

    Hae-e attempts to get a hold of Lee Sun-jae after being put in a difficult position at school. Haeng-seon catches Ji Dong-hui in a hostile moment.

14. 

    14. Find the Unique Solution

    2023-02-26 · 73m

    News about Hae-e leaves those around her feeling rattled. Haeng-seon begins to suspect something's off. Chi-yeol confronts Dong-hui about his behavior.

15. 

    15. The Result of Chance and Inevitability

    2023-03-04 · 76m

    Lee Sun-jae's confession ignites a scandal at the school. Chi-yeol attempts to put an end to Dong-hui's scheme before it's too late.

16. 

    16. You and I, the Union of Two Universes

    2023-03-05 · 77m

    Grappling with her mother's return, Hae-e announces a shocking decision. Haeng-seon and Chi-yeol make a pivotal choice about their future.