电影《爱上北斗星男友》是爱奇艺出品的一部奇幻爱情剧，由林宏杰和陶声执导，陈祉希担任监制。这部电影由徐璐、张铭恩、任言恺和吴昕领衔主演，以北斗星的天星师赤语和地球女制作人文素汐之间的爱情故事为核心。

故事的背景设定在北斗星，一个因内乱而陷入混乱的星球。天星师赤语为了找回他的昔日恋人姞婉而来到地球。在地球上，他偶然遇到了能量重组后变成了“水逆”的文素汐，一位女制作人。赤语被卷入娱乐圈，他们之间的故事也随之展开。

赤语为了维护宇宙能量守恒，带着维护能量平衡的日月珏来到地球。他与姞婉相爱，但为了救姞婉，赤语擅自修改了她的命运，导致姞婉每次能量重组都无法活过三十岁。为此，赤语被囚禁在北斗星上三千年。

经过三千年的时间，赤语决心修复因他而引起的能量缺失，并帮助姞婉顺利度过三十岁。他再次回到地球，并在那里与能量重组后成为金牌制片人的文素汐相遇。两人之间展开了一段既甜蜜又充满波折的爱情故事。

The movie "Fall in Love with Big Dipper Boyfriend" is a fantasy romantic drama produced by iQiyi, directed by Lin Hongjie and Tao Sheng, and Chen Zhixi serves as the producer. Starring Xu Lu, Zhang Mingen, Ren Yankai and Wu Xin, the film centers on the love story between Chiyu, the star teacher of the Big Dipper, and Wen Suxi, a female producer on Earth.

The story is set in the Big Dipper, a planet in chaos due to civil unrest. Chiyu, the star master, came to Earth in order to find his former lover, Ji Wan. On Earth, he accidentally met Wen Suxi, a female producer who became "Mercury retrograde" after energy restructuring. Chiyu was involved in the entertainment circle, and the story between them also unfolded accordingly.

In order to maintain the energy conservation of the universe, Chi Yu came to the earth with the Sun Moon Jue who maintains the energy balance. He fell in love with Yan Wan, but in order to save her, Chiyu modified her fate without authorization, so that she could not live past thirty years of age every time she reorganized her energy. For this reason, Chiyu was imprisoned on the Big Dipper for three thousand years.

After three thousand years, Chi Yu is determined to repair the lack of energy caused by him, and help Ji Wan to pass through thirty smoothly . He returned to Earth again, where he met Wen Suxi, who became a gold medal producer after energy reorganization. A love story full of sweetness and twists and turns unfolded between the two.