Journey to Springfield to witness the adventures of Homer, Marge, Bart, Lisa, and Maggie from their humble and heartwarming beginnings in Simpsons Roasting on an Open Fire and through all of the wild adventures of their first twenty seasons, featuring iconic episodes such as Marge vs. The Monorail; Bart the General; You Only Move Twice; and the legendary two-parter, Who Shot Mr. Burns?

Lisa convinces the locals to clean up the polluted Lake Springfield after a crowd of fans sink the Green Day concert stage. Meanwhile, Homer saves a pig from being killed in Krusty Burger and adopts it, calling the animal Spider Pig. After two days, Spider Pig fills up a silo with its excrement and not knowing what else to do, Homer dumps the silo in the lake, polluting it. The angry population forces the Simpsons to move to Alaska. Meanwhile, the...

After a botched attempt to seduce her English teacher, sixteen-year-old Alex runs away from boarding school to seek out the biological father her mother always kept hidden and learn the dark secret of her roots.