Ep 3. O Mother, Where Art Thou?

Ben 10: Omniverse season 4 episode 3, "O Mother, Where Art Thou?", begins with Ben and his team dealing with a new threat in Undertown. As they fight off the villains, Ben receives an unexpected visitor - his long-lost mother, Sandra Tennyson.

Sandra explains that she has been fighting a dangerous group known as the Organization, and she needs Ben's help to stop them from stealing a powerful device called the Alpha Rune. However, Ben is hesitant to trust his mother, who abandoned him and his father years ago.

Despite his reservations, Ben agrees to help Sandra and they set off on a mission to retrieve the Alpha Rune. Along the way, they encounter various obstacles and enemies, including a group of bounty hunters hired by the Organization.

As they work together to overcome these challenges, Ben begins to learn more about his mother's past and why she left him and his father behind. He also discovers that the Organization is far more dangerous than he originally thought, and that they have a sinister plan for the Alpha Rune.

As the episode progresses, the tension between Ben and Sandra begins to rise, as they struggle to trust each other and work towards their common goal. Meanwhile, Ben's friends Gwen and Rook attempt to track down the source of the Organization's power and weaken their hold on Undertown.

In the climactic final battle, Ben and Sandra must work together to stop the Organization once and for all and save the Alpha Rune. Along the way, Ben discovers the truth about his mother's motivations and gains a newfound respect for her.

Overall, "O Mother, Where Art Thou?" is a tense and action-packed episode that explores the complicated relationship between Ben and his long lost mother. With exciting battles and surprising revelations, this episode is sure to keep fans on the edge of their seats.