Superstore is a workplace comedy about a unique family of employees at a super-sized megastore. From the bright-eyed newbies and the seen-it-all veterans to the clueless summer hires and in-it-for-life managers, together they hilariously tackle the day-to-day grind of rabid bargain hunters, riot-causing sales and nap-worthy training sessions.
The Cloud 9 employees are rushing to finish re-building the store in time for its "Grand Re-Opening." Amy and Jonah confront their awkward kiss; Glenn discovers something about himself; Garrett avoids Jonah; Mateo worries about the voicemail he left on Jeff's phone; and Dina meets her match in guest star, Howie Mandel.
When Amy's daughter gets a job at Cloud 9, Amy turns to Jonah for advice on how to balance her parenting. Meanwhile, Garrett and Dina argue over who broke up with whom and Cheyenne tries to convince Mateo that the cute construction worker might just be flirting with him for store perks.
Tensions arise among the employees after an attempted robbery, pitting Dina against Jonah. Meanwhile, Glenn has a tough time firing the store security guard, and Amy discovers that her coworkers have been hanging out without her.
As Mateo turns to stranger and stranger home remedies for an ear infection, Amy and Jonah decide to offer an alternative to Cloud 9's terrible health insurance plan. Meanwhile, Glenn enlists Dina to help him get medical attention for his own embarrassing condition.
Trying to prove how "wild" she can be, Amy turns a boring Christmas Eve at Cloud 9 into a holiday adventure. Meanwhile, Jonah and Garrett's roommate issues boil over; and Glenn tries to prove to Mateo that Christmas is more than just "fine."
After a Cloud 9 employee posts a controversial video online, Dina enlists Cheyenne to help police the rest of the staff's social media accounts. Meanwhile, Amy learns something about Jonah that drives her to desperately pursue Instagram views, and Glenn suspects Mateo of rewards card fraud.
When Amy throws a party to prove how great she's doing post-divorce, she's forced to enlist Dina and Jonah's help, and Dina ends up making the ultimate sacrifice. Meanwhile, Glenn and his wife Jerusha are forced to conduct some personal business at Amy's home.
When Mateo faces complications with his transfer to a Cloud 9 Signature store, he becomes desperate to resolve his undocumented status. Meanwhile, Amy helps Glenn battle an Internet troll, Jonah and Cheyenne try to give Mateo legal counsel, and Dina and Garrett take issue with corporate.