Ep 1. A Good Treason

In the season 4 premiere of Vikings, titled "A Good Treason," power struggles and tension are at an all-time high in the Viking world. Ragnar, the legendary warrior who is now a king, has returned to Kattegat after a long absence. But his return is not met with the warm welcome that he might have expected. Instead, he faces resentment and suspicion from his people, who are wary of his intentions and his new allies.

Ragnar's absence has left a power vacuum in Kattegat, and many of his former allies and friends have taken advantage of this situation to seize power for themselves. Now, Ragnar must navigate this treacherous political landscape and try to regain his authority, while also dealing with threats from all sides.

One of the main sources of tension in this episode is the relationship between Ragnar and his son Bjorn, who is now a respected Viking warrior in his own right. Bjorn has his own plans and ambitions, and he is unwilling to defer to his father's leadership. This puts the two men at odds, and their conflict threatens to destabilize the entire kingdom.

Meanwhile, Ragnar's former wife Lagertha has also returned to Kattegat, and she is plotting her own revenge against those who wronged her in Ragnar's absence. Her story arc intersects with that of the young warrior Kalf, who has risen to a position of power in her absence and is now eager to assert his authority over Kattegat. These two characters have a complicated history together, and their interactions in this episode are full of tension and subtext.

As always, the show is full of spectacular action sequences and stunning visuals, as the Vikings raid and pillage their way across Europe. There are battles, betrayals, and surprising plot twists, as the show sets up the conflict that will drive the rest of the season.

Overall, "A Good Treason" is an excellent start to the new season of Vikings, full of complex characters, intense drama, and exciting action. It sets the stage for an epic journey into the heart of Viking culture, where power and loyalty are constantly being tested and redefined.