You will see Director D at Spy Headquarters, then go to the Eye Doctor, who is more than he seems. He will help you rescue the first spy. The first spy will give you a device to help rescue the second spy, and so forth. (see related question)
spy island
You don't. You have to complete the rest of the island first. Look up How to Beat Spy Island on Poptropica on WikiAnswers.
On Spy Island, you will be given the challenge to rescue three kidnapped spies, and to defeat the evil schemes of the agents of the B.A.D. conspiracy. (see related question)
you need to find the missing spies then defeat director d
On Spy Island, rescue the three kidnapped spies, get the Fingerprint from the Bistro, and reach the satellite control center to stop the B.A.D. scheme. (see the related question below)
Director D is in the spy headquarters adjacent to where the Poptropica blimp lands. Go to the second floor to get your information on the three missing spies.
Unless you save all three spies in order, you cannot accomplish the Spy Island quest. (see related question)
Where is the warehouse on poptropica's spy island?
On spy island, the codes are on the cards you receive from each of the three rescued spies. They are LASER, HAIR, REMOVAL. The evil B.A.D. is using a satellite laser to zap people's hair off. The words go in the computer to reactivate it.
There are some complex parts to Spy Island (the decoder, which is not really necessary) and the fact that the three spies have to be rescued in a certain order. But it is not nearly as hard as some of the later islands. If you get stuck, consult the solution at the related question below.
To get the laser pen and the bowtie, you have to rescue the first two spies on Spy Island.
To rescue the three kidnapped spies on Spy Island, you have to get them in order, because the first has the Laser pen to free the second one, and the second one has the rappling Bowtie to rescue the third one. (see the related question)