Siesta Key follows an exclusive group of friends as they come of age in the most beautiful beach town in America: the island of Siesta Key, Fla. These young adults will confront issues of love, betrayal, class and adulthood.
Alex deals with the repercussions of his fling with Amanda and debates whether or not to tell Juliette; Madisson steps away from the battle for Alex and catches Brandon's eye; Kelsey and Garrett grow further apart.
The crew heads to Bimini for a few days of fun in the sun; drama quickly spreads when evidence of Alex and Kelsey's indiscretions surface; Juliette becomes overwhelmed with jealousy while Madisson and Brandon continue to get cozy.
Kelsey receives a modeling opportunity that sends her packing for NYC; Bradisson attempt to get their relationship back on track; Juliette heads back to school, but her happy arrival quickly turns into a nightmare.
Rumors emerge about Juliette and Alex. Kelsey and Madisson head off to New York to pursue their careers, but a rude awakening awaits them. Back in Siesta, Brandon makes a choice that forever changes the course of Bradisson.
Juliette reveals her rekindled relationship to the group; Kelsey and Garret continue to bond; Tarik opens up about his sexuality; Brandon struggles with his infidelities as Chloe and Canvas dig for the truth.
Paige breaks the news to Madisson about her unexpected romance with Canvas. Brandon is devastated when Madisson brings her new squeeze Ben to Alex's housewarming party. When Alex and Hannah's feud comes to a head, Juliette must decide who to stand by
Brandon makes a final emotional play to get Madisson back; Kelsey reveals her feelings to Garrett, only to be blocked by an unforeseen obstacle; Juliette and Alex have an explosive fight that leaves JAlex's future uncertain.