Season 1 Plot
A playful rivalry turns into something more when a cocky senior dares his classmate to win the school’s top celebrity’s heart in just 21 days.
21 Days Theory Season 1 aired on August 7th, 2022.
Season 1 Episodes
1. Episode 1
August 7th, 202239 min
Q meets X and is challenged to beat him in 21 days—sparking rivalry and unexpected bonds.
2. Episode 2
August 14th, 202238 min
After X’s injury, Q tends to him closely, giving them a chance to see each other differently.
3. Episode 3
August 21st, 202244 min
As their days together grow, Q’s feelings shift, and mutual understanding slowly deepens.
4. Episode 4
August 28th, 202240 min
At a turning point, Q and X must face whether the “21-day theory” will define their future.
