The show revolves around the lives of 8-year-old Arthur Read, an anthropomorphic aardvark, his friends and family, and their daily interactions with each other.

Arthur is a 30-year-old child who will inherit $750 million if he complies with his family's demands and marries the woman of their choosing.

A drunken playboy stands to lose a wealthy inheritance when he falls for a woman that his family doesn't like.

Johnny, a young man living in the UK, works tirelessly at a restaurant run by his ruthless boss, who values profit over people. Johnny hasn't seen his mother, who lives in Nepal, for five years. Despite his longing, his boss refuses to grant him time off when his mother invites him to celebrate the Dashain festival together, a cherished tradition involving family and festivities. Heartbroken, Johnny is forced to postpone the reunion, promising his mother he'll come next year.

When Jo Gang-Ja attended high school, she was notorious for fighting. She gave birth to her daughter A-Ran in her late teens and became more responsible. Her daughter A-Ran is now a high school student, but A-Ran is bullied at school. Jo Gang-Ja decides to go back to high school to protect her daughter. Jo Gang-Ja becomes a high school student again.

Allison Pyke is a young angel who's trying to get her ticket into heaven. Complications arise when two important men in her life unexpectedly show up to form a love triangle.

Milton is a hardened felon who has broken out of Hell, intent on finding the vicious cult who brutally murdered his daughter and kidnapped her baby. He joins forces with a sexy, tough-as-nails waitress, who's also seeking redemption of her own. Caught in a deadly race against time, Milton has three days to avoid capture, avenge his daughter's death, and save her baby before she's mercilessly sacrificed by the cult.

For hundreds of years, the Claus family has delegated the title "Santa" to a chosen few of its members, which can be passed down upon retirement. Each Christmas, Santa and his vast army of highly trained elves produce gifts and distribute them around the world in a one-night high-tech operation. However, when one of 600 million children to receive a gift from Santa on Christmas Eve is missed, it is deemed ‘acceptable’ to all but one—Arthur Claus, the current Santa’s misfit son deemed ineligible for the title, who executes an unauthorised rookie mission to get the last present halfway around the globe before dawn on Christmas morning.