The gang must get Skips to rejoin their bowling team, or face losing their souls to Death.

Death will spare Muscle Man’s life if Mordecai and Rigby babysit his kid.

When their boss Benson accidentally breaks Mr. Maellard's autographed guitar, Mordecai and Rigby have to help him replace it.

Mordecai has a date with C.J., but he unfortunately also has to babysit Death's 300-year-old son, Thomas.

Muscle Man gives the group a list of things that he wants to do before "the end." When everyone realizes he is serious, they decide to make Muscle Man's final wishes come true.

Before arriving at Lolliland, Pops becomes despondent due to his approaching battle. The crew then try to cheer him up by recording their memories.

Allies from both sides rally together for the epic fight. However, Pops and Anti-Pops are once again at a stalemate. Mordecai and Rigby are forced to jump between the two factions.

Mordecai and Rigby relive the first episode, but soon realize that they need to help Pops. Pops realizes that he must reach out to Anti-Pops and finally saves the universe at the cost of his life. The entire park crew return home to their friends and family where they are seen growing up and moving on to better lives. 25 years later, the entire crew return and Mordecai and Rigby reflect on Pops' sacrifice. Regular Show ends with Pops watching the series on VHS and uttering one final "Jolly Good Show".