Zhè bù diànyǐng jiǎng de shì yī sōu tàikōngchuán de màoxiǎn gùshì.
This movie is about the adventures of a spaceship.
Tips
usage
太空船 is more common in Taiwan and informal contexts. In mainland China, 宇宙飞船 (yǔzhòu fēichuán, 'universe flying ship') or 飞船 (fēichuán) is more standard for official/technical usage. 航天器 (hángtiānqì) is the formal term for 'spacecraft.'