Lead cast: Seo Kang-joon, Jin Ki-joo, Kim Shin-rok
Latest Nielsen rating: 6.6 per cent
Last seen in the Disney+ sci-fi thriller Grid in 2022, Seo Kang-joon is finally back on screens, having recently completed his compulsory military service in South Korea.
He has changed from army fatigues to a school uniform in Undercover High School, a straightforward and self-explanatory but pleasing formulaic action comedy.
Seo plays National Intelligence Service (NIS) agent Jung Hae-sung, who we first see entering from on high as he swoops in on the illegal sale of a prized Buddha statue, and grins and postures heroically between skirmishes with foes on both sides of the trade.