There once existed a planet named Beal, until it was wiped out by the mysterious entity known as Gaizok. The few remaining survivors escaped to Earth and split into three families, named Jin, Kamie, and Kamikita respectively. While attempting to start a new life, the collectively known "Jin Family" prepared for the inevitable Gaizok invasion on Earth and its giant mechanical beasts known as "Mecha Boosts". In order to defend their new home, they have built three vehicles which when combined form the mighty Zambot 3. The Jin Family must not only defend against Gaizok attacks, but also harsh criticisms from the very people they protect, who blame the Jin Family for the invasion in the first place. (Source: AniDB)

The episode focuses on Lupin's gang descending upon the Kingdom of Dorrente in order to rescue a famous thief who has been detained. While this takes place, the most notorious thieves from around the world gather in the kingdom.

(Source: MAL News)

The new TV special will be about the battles against Jigen, who aims for Lupin who searches for the treasure. Goemon, who is angry because he cannot forgive betrayal of Jigen, will fight along with Lupin against the strongest enemy in the history.

(Source: MAL News)

Lupin's on the trail of a decades-lost treasure—the collected booty of World-War-II-era thief Harimao—worth billions of dollars. But as he plans to con retired British spy Sir Archer into giving up the location of the stash, Archer himself gets into the hunt. Lupin now has to team up with his former mark to outwit a more sinister opponent who wants the treasure for himself. And of course, Zenigata's on the scent and gunning for the gang once again.

(Source: ANN)