太空狗：热带冒险

　　When。a。mysterious。and。dangerous。whirlpool。phenomenon。appears。in。the。tropics。of。the。Atlantic。Ocean,。Belka。and。Strelka,。the。first。astronauts。on。their。way。back。from。a。mission。to。Saturn,。are。sent。to。investigate.。As。they。venture。down。into。the。swirling。ocean。depths,。they。discover。a。mysterious。UFO。attempting。to。steal。all。of。Earth's。water.。With。the。help。of。their。good。friends,。Belka。and。Strelka。once。again。perform。a。heroic。mission。to。save。both。our。planet。and。the。distant。home。of。their。new。alien。friends.