Warp in the first level of the first world
When you begin the level, head left and jump. Plok will land in the water, get launched out and will end up on an island. There will be a tree with a glowing fruit in it. Hit this fruit 3 times and you will be sent to a new level where you must race against a time limit. If you beat the level before the timer reaches 0, you will warp to the sixth level!