Ep 1. Storm Front: Part 1

In Star Trek: Enterprise season 4 episode 1 titled "Storm Front: Part 1," the crew of the Enterprise finds themselves on Earth in the year 1944, where an alien race known as the Sphere Builders has changed history by helping the Nazis win World War II. Captain Jonathan Archer and his crew must navigate this alternate timeline while trying to find a way to undo the damage and restore the proper timeline.

As the episode opens, the crew is trying to recover from the devastating events of the previous season's finale. Enterprise has been badly damaged by the Xindi attack and the crew has suffered numerous casualties. Despite their setbacks, Archer and his crew remain determined to continue their mission and explore the galaxy.

Their plans are quickly derailed, however, when the Enterprise is suddenly pulled into a temporal vortex and thrust into an alternate timeline. They find themselves on Earth in the midst of World War II, but things are very different from what they learned in their history books.

In this alternate reality, the Nazis have won the war and now control much of the world. Archer and his crew are quickly taken prisoner by the Nazis, but they manage to escape with the help of a group of Resistance fighters who have been battling against the Nazi regime.

As the crew works to understand what has happened and how they can fix it, they discover that the Sphere Builders, a powerful alien species that has been manipulating events in the galaxy for centuries, are behind the altered timeline. The Sphere Builders have been in contact with the Nazis, providing advanced technology and aiding them in their quest for global domination.

Archer and his crew must work closely with the Resistance fighters to find a way to stop the Sphere Builders and restore the timeline. They face numerous challenges along the way, including the discovery that some of their own crew members are working with the Nazis and have been turned against them.

As the episode comes to a close, Archer and his crew find themselves on the brink of a dangerous mission that could mean the difference between success and failure. Their goal is to infiltrate a heavily guarded Nazi base and steal a crucial piece of technology that could give them the edge they need to defeat the Sphere Builders and set things right.

"Storm Front: Part 1" is a thrilling and action-packed episode that showcases the ingenuity and resilience of the Enterprise crew. As they face one of their greatest challenges yet, they are forced to confront the darkest aspects of human history and fight against incredible odds to save the world as they know it.