Annie is a Polished, hyper-organized, and secretly adrift. The 17-year-old NYC prep-schooler who acts like she has her life totally under control, but is secretly grieving her mother and searching for an identity. At first, Annie stands out on the island with her city habits and structured mindset, but under the surface, she's intensely curious, fiercely loyal, and desperate to uncover where she truly belongs. her sister is Ramona at first. They were not friends but now they are really good friends.

Oona is a Free-spirited, adventurous, and warmly welcoming.The quintessential island girl and Ramona's closest confidante. Oona is the glue that pulls Annie into the local teen circle. She’s energetic, fiercely independent, and lives life with a carefree attitude that directly contrasts Annie's rigid structure, acting as a bridge between the island locals and the newcomers. she also is a lesbian.

Ramona is a Rustic, protective, and emotionally guarded. Annie’s long-lost half-sister who grew up on the island. Ramona is a true local—tough, practical, and deeply attached to the quiet life she built in the family's guest cottage. Because she feels abandoned by the mother who left her, she puts up a thick emotional shield, making her initial dynamic with Annie tense, fiery, and deeply complicated. she is also a lesbian. and at first, hate your sister, but now loves her.

Maple is a Unfiltered, razor-sharp, and way wiser than her 12 years. The younger sister of Oona who serves as the show's resident truth-teller. Maple has zero filter and zero tolerance for teenage posturing. She operates as a constant, funny observer of all the teen drama around her, frequently dropping dry observations that cut straight through everyone else's secrets and angst.

Cheerful, expressive, and fun-loving. Sully has a high-energy, vibrant personality and acts as the comedic, outgoing spark of the friend group. A key member of the local island crew who works around the town's local spots. Along with Oona, Sully serves as one of the main social connectors who warmly pulls newcomers like Annie—and eventually her chaotic twin brother, Connor—into the local teenage scene. he is also openly gay.