It features several Autobots teaming up to battle the evil Predacons seeking to conquer Earth.
The series is set within the same continuity as Transformers: Prime, and takes place in Japan.
The main antagonists, the Predacons, aim to collect several energy sources called Legend Disks in order to resurrect their leader, Dragotron (the Japanese name for Predaking).
During these attacks, two cousins, Isami Tatewaki and Tobio Fuma, revive the Samurai and Shinobi Autobot teams, respectively.
The rest of the series follows an episodic format, with either the Samurai or Shinobi teams and their respective child sidekicks traveling to different time periods, trying (and usually failing) to retrieve the disks.