Long ago, in the time of the dinosaurs, the Earth was invaded by forces from outer space. The only people capable of the stopping them was a team known as the Kyouki Ryu no Sha, the People of the Strong Dragons, or, Kyoryuger for short. Now, in the modern world, they return using the powers of the Beast Batteries to fight off this revived threat

The series takes place a year after the 2nd installment.

Chan Siu Sang is single and all alone, his old love Chu So Ngo married the doctor that treated her son and left the police force. Then he meets Wai Ying Zi, a rookie police officer that is under Chan Sam Yuen Police Traffic Department unit. The two get off on the wrong foot due to misunderstandings. Wai Ying Zi who is eager to show off her skills seems to get into a lot of trouble. She is deemed reckless and rash. Later on, Ying Zi joins Siu Sang's CID unit which leads to the two bickering non-stop. After Siu Sang saves Ying Zi life on one of their investigations she learns to respect him and the two become friends. Chan Sam Yuen is promoted to the head of the Police Traffic Department. She and Ching Fung are also now parents to a pair of girl/boy twins, but their marriage is not as happy as it seems as the two continue to have quarrels in their marriage. With marital problems at home, Sam Yuen becomes a cold, unreasonable and mean boss at work. When a case similar to the psychotic serial rapist in the last series arises Sam Yuen starts feeling threaten and insecure even though the culprit Bao Gwok Ping is still locked up in jail. It seems Bao Gwok Ping has been communicating with someone on the outside who agreed to take on his split personality persona and continuing his crime spree. Due to Sam Yuen's carelessness her son is kidnapped and killed by the new culprit. This causes Sam Yuen and Ching Fung marriage to be in further jeopardy when he blames her for the death of their son.

Kyoichi Suzuki is an average college student in his junior year. Although he's not in one of the top universities, he's satisfied with his college life studying architecture. Kyoichi left home and is finally on his own, living in a beat-up apartment in Tokyo. However, this apartment building is home to some out-of-the-ordinary residents, who are always bugging Kyoichi. His next-door neighbor hits Kyoichi up for a loan when he finds out that Kyoichi just got paid. His other next- door neighbor who works at a nightclub, always calls Kyoichi, demanding him to come pick her up, because she's so drunk. Other than that, Kyoichi is satisfied with his normal life, until he meets a girl one day...

Story 1: Chichi to Ko

Synopsis: Toho Akihiro (Ishimaru Kanji) opposed his boss and resigned from the large consulting firm he had been working for. His father, Hideo (Takahashi Gentaro), is the owner of a convenience store in the countryside. It is his daily routine to talk to regular customers and he also gets along well with his staff. Because business has been poor, he seeks his son’s help. Akihiro comes to revamp the store by making use of his experience as a consultant. At first, sales increases, but father and son clash over the complete change in management policy which disregards regular customers. Then Hideo collapses and Akihiro works the night shift. He is confronted with an electricity disruption around the store due to a downpour. He realises something that his father had prized above running the store while under pressure to deal with the situation.

Cast: Ishimaru Kanji, Takahashi Gentaro

Story 2: Daifuku Obasan

Synopsis: Igarashi Satomi (Yoshida Yo) has been absent from part-time work at a convenience store for about two months because she has had to take care her mother who had fallen sick. Right after her return, she is informed that an elderly lady (Matsubara Chieko) had been coming to the store daily since a month ago and constantly picked on the staff. The lady is an ordinary customer whom Satomi had occasionally seen before, but she does not understand the reason for her becoming a complainer. Satomi recalls some incident from the woman’s daily visit to the store to purchase daifuku, and decides to go to her house in order to talk to her personally. She learns new facts from her conversation with the lady … …

Cast: Yoshida Yo, Matsubara Chieko

Story 3: 10.30 pm no Jousei Kyaku

Synopsis: Inubushi Kazuma (Mizobata Junpei) works the night-shift at a convenience store. He dreams of becoming a photographer and had been an assistant for a famous photographer, but could not tolerate the hardships of training and stopped going to work one month ago. Kazuma fancies a customer Oikawa Chihiro (Kojima Haruna), who always comes to the store at the same time every night to buy cafe latte. He accidentally learns that her dream is to become a designer. As he hears this, he enthusiastically talks about his own dream despite giving up on it. At some point, Kazuma eventually vents his feelings of depression to Chihiro. This would kick off their future in a big way.