Some of your friends have been abandoned in distant planets with no chance of coming home. Get into your ship and travel through 15 worlds to help your stranded fellows. Complete the objectives of each level that are shown at the bottom of your screen, the path to the ship will open and your partners can go aboard. For example, in Level 01 the man only has to touch the switch in the upper section (half of the barrier dissppears), but unless you shoot ten enemies with the ship the other half of the barrier won't disappear. And you have to do this without losing a life because the screen and objectives reset from start every time one of your characters die. And watch your jump, your friends can jump high but will pass away if they fall too far.