Donkey Kong II

Donkey Kong II is Donkey Kong's freedom from being locked up by Mario.

History
Donkey Kong Jr. is climbing up active wires, dodging Snapjaws, and vicious birds to help free Donkey Kong, who's had all his limbs locked up by Mario.

After opening all of Donkey Kong's locks, Donkey Kong Jr. catches him and makes off.

Timeline

 * Likely takes place simultaneously with the ending of Donkey Kong Jr. (Arcade), as it depicts the same events as that game’s final level.