Season 1 (2023)

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.

Episodes: 16

Star Cast: Jeon Do-yeon , Jung Kyung-ho , Shin Jae-ha , Lee Bong-ryeon ,

Episodes List

Ep.1 You and I, the Intersection of Two Universes

Air Date: 2023-01-14

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.

Ep.2 Probability of Encountering Your Enemy at Your Worst

Air Date: 2023-01-15

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.

Ep.3 Number of Outcomes Where Dislike Becomes Like

Air Date: 2023-01-21

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.

Ep.4 Revolt of the Arithmetic Sequence

Air Date: 2023-01-22

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.

Ep.5 The Secret Probability Distribution of X and Y

Air Date: 2023-01-28

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

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

Air Date: 2023-01-29

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.

Ep.7 The Very Average Laws of Attraction

Air Date: 2023-02-04

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.

Ep.8 Chance Becomes Fate through Inductive Reasoning

Air Date: 2023-02-05

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.

Ep.9 The Butterfly Effect of Our Relationship

Air Date: 2023-02-11

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.

Ep.10 Emotion, the Variable That Alters Relationships

Air Date: 2023-02-12

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

Ep.11 The Functional Relationship of Our Love

Air Date: 2023-02-18

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.

Ep.12 Point of Intersection between Comedy and Tragedy

Air Date: 2023-02-19

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

Ep.13 How We Approach an Unsolvable Conjecture

Air Date: 2023-02-25

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.

Ep.14 Find the Unique Solution

Air Date: 2023-02-26

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.