An earnest small underdog businessman taking on the world with the help of his family should be an easy sell. Throw in a young, strong female lead and it's hard to imagine how it goes wrong. But "Backstreet Rookie" finds a way. It's not that it's not a mostly enjoyable watch, but there's vast wasted potential here that with a better cast and steadier direction could have been realized.

As for the strong points, Kim Yoo Jung effortlessly switches gear from bubbly youngster to driven achiever to smitten woman. She has the charm and talent and all the other attributes to take on more challenging roles. Kim Sun Young always delivers and her quieter moments with Kim Yoo Jung's Saet Byul are gems. The scene stealer is Seo Ye Hwa who has a marvelously vibrant character and crushes it.

The rest of the cast ranges from uninspired to grating. Kim Min Kyu might not be award-winning leading man material but he's better than he shows here. The overwhelming issue with "Backstreet Rookie", however, is Ji Chang Wook who is legitimate leading man material but airballs this performance. In more subdued moments, he exhibits the charisma and intensity that makes him an A Lister. But through most of "Backstreet Rookie", he's indulging in overplaying the character and the result is more clownish than comic.

Not that better acting would have solved the loose ends that crop up throughout the story. Dae Hyun's sister and husband appear early and seem to have some importance. But they rarely appear. Do Sang Woo is the villain but he is neither rehabilitated nor punished. He simply vanishes. Saet Byul's younger sister has a promising arc but it needed more depth.

As for the uncomfortable elements, it's certainly not a novel concept to have a much younger love interest for the main male character. But this relationship seems to be approaching serious red flag territory especially with a flashback to Saet Byul's youth days. The Dal Shik character by Eum Moon Sook though is really raising red flags. It's not blackface but there's, at minimum, a nod in that direction. With the growing international appeal of Korean culture, this is a bad look.

Overall, not a show that earns any sort of recommendation but should put Kim Yoo Jung on the shortest of lists for leads in better vehicles.