100 Days with Mr. Arrogant

Ha-Young is dumped just before their 100-day anniversary; she meets Hyung-Jun when she flicks away a kicked can and accidentally hits him, leaving a scratch on his Lexus. He demands immediate payment of 3,000 dollars. She flees, leaving behind her wallet as her problems escalate.

Hyung-Jun begins to stalk Ha-Young, insisting she settle the debt. He drafts an unconventional Enslavement Agreement that forces her to perform a long list of chores. Lacking money, she cannot pay and runs away, leaving her wallet behind, while the 100-day ordeal is set.

Ha-Young endures a grueling stretch of chores to pay off the imagined debt, including house cleaning, hauling groceries, and washing the car. The arrangement feels like a nightmare, testing her freedom and resilience. The 100-day timeline is clearly established as the frame of the ordeal.

Ha-Young discovers the actual cost to repair the car is only about ten dollars. Seizing the moment, she plans to strike back by damaging the car again and harming Hyung-Jun's reputation. Hyung-Jun counters by tightening control and escalating consequences.

Hyung-Jun retaliates by becoming Ha-Young's tutor, reversing the power dynamic. The dynamic shifts from punishment to guidance as they spend time in tutoring sessions and daily interactions. This change begins to blur the lines between coercion and care.

The punitive setup gradually gives way to affection as they confront their feelings. What started as manipulation becomes a complicated, evolving relationship. They begin to realize they may be falling in love.

At the end of the 100 days, Hyung-Jun frees Ha-Young from the arrangement and the two share a kiss at the gate of Ha-Young's house. Ha-Young's mother witnesses the moment, reacting with protective hostility and warning him away. She then brings in another tutor to continue Ha-Young's studies.

Ha-Young declares she wants to marry Hyung-Jun, but he confesses that his earlier actions were not a serious commitment and that he merely toyed with her. He leaves his apartment, leaving Ha-Young more vulnerable and more determined to forge her own path. The moment deepens her resolve to study and grow.

After the breakup, Ha-Young studies hard to reach Hyung-Jun's college. A tutor guides her, and Hyung-Jun hints that she will be admitted to his college, but with a surprise element to keep their relationship uncertain. The truth unfolds around exam results and admissions.

During the results, Ha-Young learns she wasn’t initially selected to enter the same college as Hyung-Jun. The tutor gently leads her toward a moment of clarity, revealing that she has now been admitted to that college, though Hyung-Jun wants to surprise her, keeping the future ambiguous. The revelation reshapes their plans and expectations.

In a long reflective sequence, Ha-Young drives with Hyung-Jun and talks about all the chores he once dodged and duties left unfinished. The conversation surfaces the unresolved debt and questions about their future together. The scene marks a turning point toward resilience and self-reliance.

A late scene shows a high school boy kicking a can that clips Ha-Young again, reigniting the need to settle the damages. She hints there is only one way to settle the debt, implying that she will work for them and shoulder the chores. The ending leaves the future open, underscoring resilience and the messy path toward love.

The film closes with an overarching sense of ambiguity about whether Ha-Young and Hyung-Jun will end up together. The characters are left to navigate college, careers, and affection without a definitive resolution. The final mood centers on hope tempered by unresolved questions.