While Jane sets out to prove her worth in The Underground, Cliff goes into “dad” mode and Niles devotes a day to Dorothy, who’s finally growing up.

Dorothy finds a friend in Baby Doll, while Vic looks to win Roni back. With Rita’s help, Larry finally tries to break the ice with his family.

The Doom Patrol (along with Niles & his daughter) are still mini-sized after their last adventure. Ultimately, Niles will have to sacrifice something precious to save the team.

As Niles and Cliff set out to find a missing Dorothy, Larry is tasked with handling Niles’ old research team when the ageless aeronauts return from space.

While Niles heads north to find Dorothy’s mother, the Doom Patrol embraces their inner morons after receiving a mysterious package.

Cliff, Jane, and Rita pursue a time-altering doctor in their reluctant quest to help Niles and Dorothy. Meanwhile, Vic meets a military vet who challenges his beliefs.

Niles, Rita, and Larry end up in the interdimensional clutches of Red Jack, an infamous villain who feeds on pain, while Cliff visits his daughter with Jane.

When the Dannyzens throw a massive party at Doom Manor to resuscitate Danny the Brick, Dorothy longs to join the festivities and experience life as a grown-up. As the party rages on, Rita asks Flex Mentallo to help unleash her full potential -- which has some dangerously racy consequences.

Before the Doom Patrol can answer a call to save the world from The Candlemaker in the season finale, they must first battle long-forgotten imaginary friends.