LOONA TV #428 is the four-hundred-twenty-eighth episode of LOONA TV.
HeeJin, HyunJin and ViVi are all practicing their performances for LOONAbirth. Meanwhile, Kim Lip, JinSoul, Go Won and Olivia Hye are watching, when the producer accidentally turns the lights off. Olivia Hye recounts how she made the same mistake at a music show once, where she was standing against the wall, and accidentally pressed the light switch with her back.
JinSoul points out that the teaser for Hi High had been released that day, and states that the beat is probably the fastest among all girl groups.