When does Summer Camp Island return?

Summer Camp Island is an American animated television series. It premiered on July 7, 2018. The series depicts the episodic adventures of Oscar and Hedgehog, both of whom are staying at the eponymous summer camp. The show premiered with a 48-hour marathon consisting of the first 20 episodes running over an entire weekend. Another 20 episodes premiered on June 23, 2019. Four additional seasons premiered exclusively on HBO Max, at approximate six-month intervals from June 2020 to December 2021.