So the episode starts with Juvia being all happy becuase this is the 413th anniversary from when her and Gray first met, with the previous day being the 412th anniversary and the next day being the 414th anniversary. Erza then urges her to give Gray a gift in order to celebrate their anniversary, because she admires how Juvia treats every day as being something special.
Unfortuneately Juvia doesn't have any ideas as to what kind of present Gray would like, so she tries to ask around to get some ideas. Mira Jane then tells her that if she really wants to show Gray how sincere her feelings are, she should make something herself. At first she tries to bake a cake, but that ends up going horribly wrong. Then Carla suggest that she should try to make some clothe. She then decides to knit a gray scarf. She then tries to find Gray, but he's nowhere to be found in the guild.
She then goes looking for him in the town, where she meets Lyon. He asks her what she's doing and she then tells him that it's her and Gray's anniversary and so she wants to give him a present. She then leaves, but Lyon seems to ponder her use of the word "anniversary".
She eventually finds Gray and attempts to give him the scarf but he refuses. She then attempts to persuade him some more, but he is adament in not wanting to accept the scarf, even going so far as go remark that since he's an ice wizard the cold doesn't really bother him. Juvia then says that he doesn't need to wear it but that he should at least accept it in order to honour the occasion. When Gray asks what occasion she is referring to, she then reveals that this is the 413th anniversary of their first meeting. Gray then says that he's never heard of such a weird anniversary, but Juvia just says that the date doesn't really matter. If it's a happy day then it's worth celebrating. Gray then rejects her again with a "Sorry. Maybe next time." Juvia is both puzzled and saddened by Gray's coldness. Lyon then shows up and it seems as if he has something important to tell her.
We can cut to Juvia sitting alone on some stairs looking completely devastated. Erza then walks by and asks her what's happened. Juvia then tells Erza what Lyon just told her: That today is the anniversary of the death of Gray's teacher, Ur and therefore it's best to just leave him alone. Juvia is very bothered by this, but Erza assures her that Gray probably isn't bothered by what she did. After all, each day means something special to every person. Erza also reiterates that she truly admires how Juvia values each and every day. Juvia then breaks down and cries while hugging Erza who assures her that everything is going to be okay.
It then shows Gray and Juvia both walking aimlessly around (it's also snowing). Juvia is heading back to her dorm, obviously still affected by what happened but otherwise optimistic. Gray on the other hand seems pensive. He then suddenly remembers back to when he and Lyon were still training under Ur and that she also gave them a scarf in order to keep them warm. He then regrets his behaviour and goes back to where Juvia offered him she scarf. He digs through the snow and eventually finds it. In the next shot we see him wearing it. Erza walks by him, notices him wearing it and smiles.
The next day Juvia apologizes for her behaviour but Gray tries to assure her that it's okay because he wasn't really himself. He is then cut off when Juvia immediately tries to give him yet another present, which is a body pillow of herself. Gray of course rejects it but Juvia insists and states that she will keep trying. She then smiles and the episode ends.