Megatron stays frozen in the Arctic for 12,000 years, but there’s no actual time travel for the mega-transformer or anyone else.

Under the guidance of the Warehouse caretaker (John Larroquette), three apprentice Librarians and their Guardian venture forth each episode to contain various rogue magic threats while the actual Librarian (Noal Wyle) who put the team together tries to find the library which is lost in space and time. Apart from that lost library, there is no time travel until the final episode of the second season (“. . . And the Final Curtain”) when two of the team depart for the year 1611.

For me, the characters, acting, writing, and plot arcs were well below that of Warehouse 13, although the setup was nice.