Tink's friends Clank and Bobble show Peri their newest invention: a snowmaker. The following day, Tink and Peri meet at the border. Periwinkle preparing to enter the warm seasons. Peri and Tink seemingly have a goodbye moment, but Tink whispers a plan to Periwinkle, as Dewey is too heartbroken to watch the fairies say goodbye. At that moment, Dewey realizes it's too dangerous for the fairies to cross the border and escorts Tinker Bell back. Luckily, Dewey's pet lynx, Fiona, catches the fairies. Tink then thinks she might be able to make that possible, but before she can design the plan, the edge of the mountain breaks, sending Tink plummeting as her coat covers her wings, thus preventing her from flying. Peri takes the time to speak about her dreams of seeing the warm regions of Pixie Hollow. Peri and Tink then look out into Pixie Hollow on the edge of the mountain Peri's house lie on. That night, Tink visits Peri's house and sits by a campfire whilst she and Peri speak about what they have in common, which turns out to be a lot. Unlike Spike, Gliss is more than happy to show Tink around, though Spike only reluctantly agreed as she enforces the border rule. Peri also introduces Tink to her best friends Spike and Gliss. Periwinkle takes Tink on a tour of the Woods, showing her the lost things that she found, some of her favorite activities, and shows just what frost fairies have the power to do. However, Dewey explains that Milori never said when thus allowing Tink to stay for the remainder of the day. Tink and Peri come out of hiding and are heartbroken to hear this. Dewey tries to ease the lord, but Milori commands Dewey to send any warm fairy that enters the Winter Woods back to the warm regions. Milori explains that he found a book from the warm regions of Pixie Hollow and fears that a warm fairy is in the Winter Woods. Just as they are getting introduced, Lord Milori, the ruler of the Winter Woods, arrives to speak with Dewey. Peri and Tink learn that they are twin sisters and are immediately ecstatic to meet each other. Periwinkle meeting Tinker Bell for the first time. The platform lifts into the air and shows Peri and Tink their uniquely rare origins through golden fairy dust. Dewey is fascinated and tells the fairies to stand on a snowflake-shaped platform. When Peri and Tink get closer to each other, their wings begin to sparkle again. Like Peri, Tink's wings began to glow while she was helping Fawn, the animal fairy, escort animals across the border. During their meeting, Peri and Dewey are encountered by Tinker Bell, from the warm regions of Pixie Hollow. Peri rushes to the keeper of fairy knowledge, Dewey, to learn more about glowing wings. On a normal day when Periwinkle is watching the animals cross the border to the Winter Woods for the season, her wings begin to glow mysteriously. When she meets Tinker Bell, the bond between the two fairies causes them to think of ways to cross the border. Even so, Peri grew a fascination with the world beyond her own and dreamed of visiting it. Like every fairy, Peri is forbidden from ever crossing the border to the other seasons of Pixie Hollow, as it is said to be dangerous for a winter fairy because of the warm weather.
Peri, however, prefers to call them "found things". Like Tink, she collects discarded items found in Never Land called "lost things," as Tink calls them. She is often on the cheerful side and is always open to new ideas and innovations. Periwinkle is very bubbly and rather adventurous (in a mature way). However, the most striking connection is their fairy wings, as they have the same wing-shaped pattern, which is unheard of because fairy wing patterns are supposed to be distinctive and unique. They share many aspects when it comes to likes, personality traits, characteristics, and appearance.
Unlike other fairies, however, Peri and Tink were born from the same first laugh, making them fraternal twin sisters. When a baby laughs for the first time, a brand-new fairy is born.