Inspired by exciting adventures, this story follows the main character, Joy, as she navigates the world with her newfound friend, Sungjae, using a mysterious planner and its clues to continue the adventure. Its setting and plotlines follow a mostly fictional approach, but there are a couple realistic touches as well. 

[SPOILER] For those who still don't understand the story:

Basically just Wendy trying to throw a surprise birthday party for Joy. Her distractions include: throwing Joy and Sungjae on a wild goose chase in order for the two to bond (kind of like a blind date) as well as to make sure Joy doesn't find out about the party. She fails. But only the party. Joy and Sungjae eventually get together. :')