In each level, you play as a tiny cell eating the other cells so that you can grow and escape your brother's body to be a real person, while unsettling music plays in the background. The screen shows a picture of a black figure and you can see through him, it shows his brain and his heart. It also shows all the cells in his body and the cell that you play as. After the first level, text appears on the screen. "I was the forgotten cell. Left to die in the flesh of my brother." "I felt myself become thick and lump. Growing into the form that was robbed from me." "I'm so hungry."