As Nami (Akiho Yoshizawa) was on her usual deco-truck errand, a High School girl called Kanna shows up. She tells Nami that she is her long-lost sister since she was 5 years old, and she has run away from home after quarreling with her mother. Nami cannot recall much about her mother, Nanako but it turns out that she is Nami’s favourite radio program DJ! Can she forgive her mother for abandoning her!? What will become of the ongoing romance with Kikuo!?!? The 4th installments of the popular “Deco Truck Nami” series – More drama, more tears and simply irresistible!

Nami’s deco-truck business is booming. It all started in high school when her late father, Torajiro, became tangled up in crime. This third installment of the smash hit series centers on Nami’s desperate early days when she gets to know her pals Kikuo and Ayano even more in her father’s troubles. It throbs, hums, and mesmerizes with all the style of a deco truck rolling down the highway!

Nami's still the hottest trucker in Japan, but now there's a new contender for the title of Queen of the Road! Meet Ayano, the toughest highway patrol officer to ever fill out a bulletproof brassiere and Nami's former high school gang rival! However, a certain truck driving mama isn't the only target this smoking-hot smokey has in her sights. There's a deadly drug hitting the market and someone's transporting it across Japan via unwitting truckers. Does that sound like a good enough reason for two ex-delinquents to set aside their mutual differences and put a little pedal and metal up some gangster butt? Maybe, but not all road trips have happy endings, and the payoff at the end of this run could prove lethal. Expect some heavy girl-on-girl friction ahead as the brakes give out, the undercover action heats up, and a crazy string of tips, gas, and drugs paves the way for Nami's wildest ride yet!

Nami’s father was a legendary truck driver, and after his death, Nami inherited the deco-truck With her up-beat personality and super driving technique, Nami is popular among her customers. By coincidence, Nami meets Momoka, a hooker who takes truck drivers as customers. Momoka says to Nami, “I want to start a new life !!” and begs that she wants to be Nami’s assistant. She is overwhelmed by Momoka’s passion, and decides to take her in. One day, after dinner, the two return to the truck and sees that there is a box which they must have forgotten to load. So they load the box back in the truck, and the odd twosome drive away to the next destination. This “box” is the start of trouble for Nami and Momoka. What lies ahead in their destiny?!