Megan, still grieving the loss of her twin sister six months prior, travels to her family's home in Nowell Lake, Louisiana with her friends to celebrate the summer solstice. During a trip to a local store, she befriends the owner Nick and purchases a magazine featuring an article on communicating with the dead during the summer solstice, a time of year with the longest daylight hours. As she settles into her family's home, Megan begins to experience strange occurrences that lead her to believe her sister's spirit is trying to communicate with her. Her investigation into the haunting uncovers a dark secret surrounding her sister's suicide and leads her to suspect the reclusive local man Leonard, who seems to be hiding something.

Solstice
As Megan and her friends embark on a summer vacation, a sense of unease settles in when she starts to feel the unsettling presence of her twin sister Sophie, who tragically passed away in a devastating accident.