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Oji Tanaka starts the day by losing his beloved "Flying V" guitar twice because his wife wants to get rid of it. At work his boss harries him. Later, after work, he believes he is being seduced by his new coworker (an alien in disguise).

The next morning, Tanaka's son Gen accidentally destroys his prized autographed LP record by his idol Michael Schenker, and his wife is shown to be entirely unmoved by his loss. At work, Tanaka believes that his "stairway to heaven" experience from the night before was not a dream.

Spurred by busybody rumormongering neighbors, Yoshiko's suspicion that Oji is cheating on her grows, though she tries to suppress it. It did not help matters that she spots Oji with Layla.

Oji reluctantly babysits his son Gen because Yoshiko is going to her high school reunion, but feels compelled to play his guitar at the model house, leaving Gen behind in his haste.

Oji feels re-energized and dresses in his old rock outfits (blond wig, leather jacket, and leather pants, which he can't button anymore because he's gained weight) in an attempt to revive his rocker identity as "Gabriel."

Oji is in a funk because he's decided to quit music. Alien Chief Scientist Hamill vows to do anything she can to have Oji play again. Meanwhile, Kotoko, Eriko, and Rinko try various futile methods to "inspire" Oji,

The aliens are under increasing attacks from their enemies. Hamill tries to persuade Oji to play music, and he seems receptive by playing twice. However, the ultimate weapon mysteriously does not fire properly.

Oji invites his surviving former bandmates from Black Heaven, Sato/Michael, Yamada/Luke, and Suzuki/Raphael for drinks. They reminisce about the old times and Oji tells him about the alien war and his music weapon.

Oji attempts to recruit members for his new band, the New Black Heaven, and has his son Gen draw the "space attitude" recruitment poster.

Black Heaven, and by extension the ultimate weapon, is not at full power because it is missing its keyboardist Watanabe/Joseph.

The rival aliens are perfecting their own final weapon using a clone of Watanabe's corpse.

The rival aliens test their ultimate weapon "Biomechanical Android Watanabe", which has 6 arms and can play 3 keyboards simultaneously, and almost destroy the aliens, canceling out Black Heaven.

1999 The final battle begins, and Black Heaven plays a marathon session in their struggle against the Watanabe clone.