Three friends enter their twenties with sex on the mind, easy access to soju, and absolutely no clue how to navigate college, money or women… or really anything else in the world. The leader of the group is a slacker from a comfy background (model-turned-actor Kim Woo-bin) who just wants to date as many women as he can; then there's a wannabe cartoonist from a poor background (Lee Jun-ho from Korean boy band 2PM); and a shy dreamer (actor-singer Kang Ha-neul) who falls for a wealthy older student at the university where he's a freshman.

The friends try to find a goal at what they think is a crucial period in their lives between being a minor and an adult, while engaging in a series of amorous pursuits, and ending up blind-sided at every turn. Thanks to the fresh and breezy screenplay by Lee Byeong-heon (who also contributed scripts for Sunny and Scandal Makers) and great chemistry between the leads, Twenty is not only revolutionary in its transformative effect on the Korean youth drama, which has traditionally been known for a darker subject matter, but is also a painfully hilarious and universally relatable reminder about how awkward transition into adulthood can be.