

Dr. Wily discovers competition energy. He creates a power vacuum to collect it. After running a test, he plans to use it to power his Warp Zone Shifter and send the N Team into the Earthquake Warp Zone. At the Palace of Power, Kevin is homesick. Mega Man builds a skateboard for Kevin to cheer him up. Dr. Wily lures the N Team to California Games by letting Kevin think he won a contest. Dr. Wily and his robots go to California Games and set up base in a hot dog stand. As the N Team has fun competing in the games, Dr. Wily collects competition energy to power his Warp Zone Shifter. However, Dr. Wily is impatient and sends his robots to increase the competition. The N Team discovers Wily's presence on California Games, and the games lose their fun. In order to collect more competition energy, Dr. Wily puts his Warp Zone Shifter through a test run. In Northridge, California, Rick Walker, a football player named Romeo, yet another football player, and a cheerleader named Stacey, along with
King Charles is about to come home through a warp zone that only opens every 1000 video years. But he decides to send a supercomputer called Game Boy in his place. Game Boy turns out to be nothing but trouble for the N-Team. Mother Brain gets Game Boy, and Dr. Wily turns him into Game Brain. When the N Team comes to Metroid to rescue Game Boy, Game Brain sends monsters after them. Duke comes to the rescue, pulling the cords out of Game Boy with his teeth! The monsters disappear. Back at the Palace, the gang officially welcomes Game Boy to the N-Team.
The N-Team is invited to Kongoland by Prince Plenty. Dr. Wily invents a brain swapper so Mother Brain can get a body. She chooses Princess Lana as the donor. However, when they go to Kongoland, Donkey Kong kidnaps Mother Brain and Game Boy. The brain swapper is accidentally attached and activated. Donkey Kong gets Game Boy's body, Game Boy gets Mother Brain's body, and Mother Brain get Donkey Kong's body. Simon and Kevin go to find ""Gape Boy"", Kid Icarus and Mega Man search for Game Boy's ""brain-in-a-bottle"", and Lana decides to give ""Mother Kong"" a makeover. Donkey Kong's family elect Simon their new leader! Everyone's brain is swapped back to the right place, and the Kong family carries Simon off.