It is a cross over between the series Lupin III and Detective Conan and takes place after the television special Lupin the 3rd vs Detective Conan. The plot follows Conan Edogawa who sets out to apprehend Arsène Lupin III, the suspect of stealing a jewel called Cherry Sapphire.

(Souce: Wikipedia)

Celty Sturluson is tasked to deliver a suspicious red handbag as part of her courier duties—the problem is: it is being sought by several organizations. As she makes her way through Ikebukuro toward the place the bag is supposed to be brought to, she is chased by mysterious men speaking a foreign language, and her package ends up dragging many of the city's residents into the conflict. Subsequently, famous actor Yuuhei Hanejima has just arrived in Ikebukuro as part of a special TV program, searching for the best couple to give them a chance to appear in one of his movies. However, Yuuhei Hanejima is actually a stage name for Kasuka Heiwajima, Shizuo's younger brother, and when an anonymous internet user threatens to kill the superstar, this user learns the weight of what that relationship means. Moreover, Shizuo discovers that the one responsible for the attempted attack is the meddlesome pest that he loathes with a burning passion. [Written by MAL Rewrite]

Like the R Season, Sailor Stars is divided into two arcs: The first arc (also filler) solves some conflicts from the SuperS season, and also sees the return of the Outer Senshi, Haruka, Michiru, Setsuna, and Hotaru (now reborn as a child). The second arc is the actual plot from the manga. Usagi bids farewell to Mamoru, who is going to America to study abroad. In his place comes the Three Lights, an idol trio consisting of three boys, Seiya, Taiki, and Yaten. The new enemy is Galaxia, a woman who desires to rule the entire galaxy by collecting the Star Seeds of humans. Three new Senshi appear, the Sailor Starlights, who also intend to stop Galaxia without Sailor Moon's help.

The second season of Tentai Senshi Sunred.