The song in question is "Mr. Problem", which consists of a similar beat and melody to GDTY's "Good Boy". ISH-ONE has currently denied the similarities of both songs. When asked, on his Twitter, if he'd sampled "Good Boy", he answered that he had not and that he was a fan of Big Bang.
Check out the comparison video above. What do you think? Plagiarized or not?
[Thanks to everyone who sent us this tip!]