The first season of 1, 2, 3 IVE follows the members of the girl group IVE as they prepare for the group's official debut. It features behind-the-scenes footage from the recording of their debut song "ELEVEN", the practice process, life in the group's dorm as they moved in together, and the members' individual activities. Starting from season 2 the episodes revolve around different kinds of variety content and games.

13th December 2021 - 27th June 2025