I'm predicting it will be about the friendship between young Jor-El and Zod, and the series arc will be about how it fractures due to some tragic blah blah blah. Smallville in space. the budget saving episodes and seasons will have them visiting earth and meeting the young Kents.
Can this tie in to the Supergirl series? If so, ratings boosting guest appearance by a teenage Kara (put her hair in pigtails and dress her in a Kryptonian cheerleader outfit)