Its Hakyeon's birthday! Taekwoon is having a mental breakdown about how to make a surprise event for his same age bestfriend. Well, he's not the type of kid who is cheerful and full of ideas on how to surprise his bestfriend in a cute way. For the past two years, they only exchange gift with each other for birthday (since they're just kindergarteners). When they're in their last year at kindergarten, Hakyeon planed a surprise event for him eventhough he only gave Hakyeon a simple present during his birthday. It's a simple one but Taekwoon knew that Hakyeon prepared it wholeheartedly. Since his birthday is later than Hakyeon, this is his chance to return what Hakyeon had done for him. But, what should he do?