OPPA (Part 1)

Lai Sin-yee is a fangirl, her biggest idol being Kim from South Korea. Sin-yee brings a cardboard cutout of Kim home, but a comet streaks across the night sky, and the cardboard transforms into a human. Sin-yee tricks the cardboard cutout into filming a reality show, allowing the two to spend some quality time together. Joey secretly observes Lydia, who is impersonating Ella, and waits for the right moment to expose her true colors. In the parallel world, Ella finally captures Liang Bao and explains to the world that she isn't from this world, and that Liang Bao seems to be the key to her journey. At this moment, the two worlds seem to resonate, leading Joey and Ella to a reunion on the seventh floor.