Wɔ afe 200x mu, afe biako pɛ wɔ Gamma adwuma a basabasayɛ wom ne nea wɔkyerɛ sɛ Oduruyɛfo Wily asehwe no akyi no, ahunahuna foforo bi puei. Oduruyɛfo Light nsa ka krataa bi fi Oduruyɛfo Cossack, nyansahufo a ɔyɛ ahintasɛm a ofi Russia, a ɔkyerɛ sɛ ɔyɛ wiase no mu robɔt mfiridwumayɛfo kɛse no hɔ. Nea ɛbɛyɛ na Cossack akyerɛ sɛ n’asɛm no yɛ nokware no, wayɛ nhyehyɛe sɛ obeyi n’asraafo dɔm no adi sɛ asɛnnennen ma Oduruyɛfo Light. Bere a asomdwoe wɔ asiane mu bio no, wɔfrɛ Mega Man fi ne hwehwɛ a ɔhwehwɛ sɛ ɔyɛ anifere a wontumi nhu no mu sɛ ɔne Cossack robɔt wuranom a wɔn ho yɛ hu no bɛko no. Anigyesɛm ne sɛ, saa bere yi de Mega Man no de ahoɔden a ɛyɛ den ahyɛ mu: Mega Buster, a ɛma otumi tow ne ho na ɔtow plasma tuo a ɛyɛ hu. Siesie wo ho ma epic showdown bere a Mega Man ko sɛ obegye wiase no bio!