Digimon Adventure 02 Drama CD: Armor Evolution to the Unknown

Armor Evolution to the Unknown (未知へのアーマー進化) is a 2003 CD drama. It is the first audio drama in the Digimon Adventure 02 continuity.

Davis's Great Valentine Tactics
On Valentine's Day, 2003, Davis explains to what the holiday is by telling him that "it's a day when girls give the boys they like chocolates". So in order to get girls to think he's cool, Davis goes to Yamato's apartment and asks to be in his band. But due to his bad singing, Matt kicks Davis out of his apartment. Meanwhile Kari, Mimi, and Sora and their partners are at a department store. When Mimi and Kari start talking about Sora and Yamato's relationship, Sora gets embarrassed, starts swinging her tennis racket at them and accidentally hits someone. He asks where he can get a heart. Not understanding what he meant, they point him to a place that sells chocolate hearts. Meanwhile, Davis goes to Koushiro's house and asks him to teach Davis how to use computers so he can impress girls that way. Koushiro agrees. But Davis presses one button, and suddenly alarms from Koushiro's computer go off. Koushiro kicks him out. Davis eventually decides to just be himself. In the department store, the strange man asks cashier for a heart. She says they don't sell hearts. He attacks her.

Heart Thief
The Kido family is eating and talking about Joe's future career. They are suddenly visited by Jun and the three Inoue sisters, Momoe, Chizuru, and Yolei. Jun starts making questions about Shuu, making Joe uncomfortable, and he then turns on the TV for a distraction. But on the news there's an emergency about someone was attacked in the department store! The strange man has the department store closed up and the police are outside. He has Sora, Mimi and Hikari as captives. He's looking for hearts. So Jyou goes to help, and he also needs to get out of his date. Inside the department store, the girls and their digimon fight the man who turns out to be a, a Digimon with no heart and has come looking for one. Suddenly, they hear a suspicious voice yelling.

The Things The Children Can Do
Takeru, Koushirou, Cody, Ken, and Yolei and their digimon are outside. Along with Taichi, Yamato and Davis. Taichi splits them into groups. Taichi, Yamato, and Yolei go off together, Jyou is in charge of the other group. Jyou's group is in charge of finding the real source of this evil Digimon and stopping it, while Taichi's group is in charge of rescuing the girls. Taichi wants a plan to get in to help the girls out so they can all fight together. So a suggestion is made that someone would disguise as a ramen delivery person and get in that way! And it's been established that only a girl would be allowed in that way. Yolei volunteers along with because once they get inside, he can DNA digivolves with. They manage to get in, but eventually get trapped as well.

Davis, Dark Evolution!
Outside the store Jyou's group comes up. Taichi and Yamato explain how their plan failed. So Yamato comes up with a plan. They tap dance in order to distract Boltmon. Except Davis who "Digivolves" into the Digimon Emperor and starts doing impersonations of Ken as the real Digimon Emperor. Ken starts to tell Davis that darkness is not who he is. And suddenly a appears with the Crest of Kindness on it. Then armor digivolves into  who shoots Davis with his Heart Beam to turn him back to normal. After that, the Digimon behind all this was a who had taken advantage of Boltmon's situation in order to destroy the DigiDestined. The DigiDestined decide to armor digivolve but before they can do that, Jyou knocks into them, and they drop and mix up their D-Terminals.

Sudden Armor Evolutions
Yolei uses Davis's Digi-Egg of Fiendship to evolve Hawkmon into. Takeru uses Hikari's Digi-Egg of Light to evolve into. Cody doesn't want to evolve as he thinks it's weird to use someone else's Digi-Egg, but convinces him. He uses Yolei's Digi-Egg of Love to evolve Armadillomon into. Hikari evolves Gatomon with Cody's Digi-Egg into. Davis uses Takeru's Digi-Egg to evolve Veemon into. Bucchiemon reasons with Boltmon and the kids subsequently fight Pukumon. The attacks of the Armor Digimon send Pukumon fleeing. Boltmon then takes his leave.