Twenty-one days in South Korea to eat, explore, meet new friends and... stalkers? Seoul has everything Linda needs for a stress-free vacation, but things start to take a turn for the worse when she stumbles into a dangerous ring of sasaengs that threaten the safety of her friends- old and new. To keep them safe, she'll have to race to find out the stalkers plan before it's too late and make alliances with people she's not sure she can trust. Navigating through a turbulent investigation, amazing (and confusing) friendships, and a whole new city, will 21 days be enough for Linda?