The series centres on Astrid (Jana Morrison) and Lilly (Samantha Aucoin), two high school outcasts who unexpectedly open a portal to another dimension, and must battle monsters to save the world. The series aired on CTV Sci-Fi Channel in Canada, Syfy in the United States, ITVX in the UK in late 2022. NBCUniversal announced the series during the upfronts in May 2021.