A scientist was successful in giving blocks life and they were good blocks. However, one day in the lab he accidentally spilled a solution on his good creation and it turned the block into an evil little thing. Now you have to use a swap gun to get rid of all of the bad blocks and save the good ones. They will get shaken up a bit but it will ultimately save them. Each level is a puzzle and you need to use the things provided to get rid of the bad block(s). Do not get rid of the good ones or the level will end.