"Drop" tells the story of a boy named Hiroshi Shinanogawa, who grew up in the 1980s. He became inspired by the Be-Bop High School manga and decided to become a delinquent. Hiroshi dropped out of a private middle school and transferred to a public school There he joins up with a delinquent gang.

The Last Ninja Yoshitaka Igasaki sends his disciples the Ninningers on a special mission over summer vacation to Shinobigakure Castle to meet its lord Tatsunosuke Hakkaku. However, Lord Hakkaku has been turned into a strange dinosaur-like creature by a strange curse, while Kibaoni Army Corps general Juza Yumihari has arrived in the village as well, seeking its "legendary evil dragon".

Maki Iizuka (Nozomi Sasaki) works as an editor for a wedding magazine in Tokyo. She is set to marry Kazunori Nakamura (Yuta Hiraoka) next month, when her grandmother dies. Her grandmother was like a mom to Maki. While Maki arranges items left by her grandmother, she discovers a box made from empress tree. The box contains a white bridal Kimono and marriage registration forms. The marriage registration forms are mostly empty, except for the name "Soichi Akiguni" filled into a blank. Maki becomes curious about Soichi Akiguni and decides to go to her hometown Izumo in Shimane Prefecture. There, she meets a young fisherman.

Facing a whirlwind of emotions, comedians endure relentless insults from angry villagers. Can they turn hostility into laughter?