Reunited Worlds

When Seong Hae-seong wakes from a nap on the rooftop of his high school, he's perplexed to find that it's no longer 2005, but 2017.

Hae-seong's search for his siblings also leads him to Jeong Jeong-won, who's struggling with debt and a confession from her boss.

Though Hae-seong's return elicits a warm welcome from his friends, his brothers Seong Hae-cheol and Seong Yeong-jun are less receptive.

Hae-seong's mysterious powers come in handy when he goes after a man who scammed his little sister. Cha Min-jun looks out for Jeong-won at the market.

Sneaking into the closed restaurant to cook dinner puts Jeong-won in a sticky situation with Min-jun. Hae-seong needs Yeong-jun's help with a patient.

While Jeong-won tries to get over what happened at work, Hae-seong tests out his special abilities. They agree to meet at a fireworks festival.

Jeong-won receives yet another visit from the loan sharks -- but this time they have good news. Hae-seong brings Hae-cheol and their sisters together.

With the restaurant being the only lead for now in the search for his killer, Hae-seong applies for a new kitchen assistant job that opens up.

Hae-seong can't figure out why Jeong-won is suddenly acting so strange around him. Cha Tae-hun puts a swift end to a date set up by his mother.

Hae-seong and Shin Ho-bang worry that the evidence they need against his killer may be long gone -- but Min-jun might be able to help.