Ep 4. Under Siege

The description for Marvel's Avengers Assemble season 3 episode 4, titled "Under Siege," follows the Avengers as they face a new threat to their team and the world.

The episode features the arrival of a new supervillain named Attuma, who leads an army of Atlantean soldiers in an invasion of New York City. As the Avengers attempt to stop the invasion, they face challenges both in their physical battles with the Atlanteans and in the unraveling of their own team dynamics.

The episode primarily focuses on the character of Captain America, who is put in charge of the Avengers for the mission against Attuma. However, tensions soon rise as the other Avengers begin to doubt Cap's leadership abilities and question his tactics. This conflict escalates throughout the episode, with each Avenger bringing their own opinions and experiences to the table.

Meanwhile, Attuma's invasion proves to be a formidable challenge for the team. His Atlantean army has a variety of weapons and tactics that the Avengers are initially unable to counteract. As the team struggles to overcome this threat, they also face unforeseen consequences that put their individual strengths to the test.

Overall, "Under Siege" is a thrilling and action-packed episode that explores both the external threats facing the Avengers and the internal challenges threatening their team dynamic. Viewers will be on the edge of their seats as they follow the team's efforts to save the world and overcome the obstacles standing in their way.