Tom and Ben plan to enter their Shockingly Secure Anti-theft app in the prestigious "So-You-Think-You-Can-App" app design contest, but when Tom accidentally electrocutes himself, he loses his voice. An Internet doctor recommends Tom not use his voice for a week, or he will damage it permanently. Ben tries to present their app by himself at the contest. Tom decides his friendship with Ben is more important and joins Ben on stage.
After Tom releases the Talking Ben app prematurely, there are so many angry customers that Ben cannot fix bugs and handle customer service, so he fixes up Gilbert, an answering machine robot. However, he programs him to not let anyone go until they are his friend. Tom at first is impressed by Gilbert's responses, but when he and Ben try to leave to go to an amusement park, Gilbert wants to go too, and won't let them leave the garage until they're friends.
Tom and Ben attend a convention featuring visionary inventors Steve Hobbs and Steve Bosniak, but when they try to meet the famous duo backstage, they discover the two dislike each other and want to break up their partnership. Tom and Ben are afraid that they will too, so they pull out a device called the Future Tron 6000 which lets them view their future on a television screen. As it turns out, their future is worse, so they try to fix it, but nothing works. They begin to fight until Angela points out that they are allowing the future to control the present.
While Tom, Ben and Hank are filming a commercial for their Sing Like a Pro app, an invention they planned for Angela that converts regular voices into singing, the gardener interrupts by running a leaf blower and then a jack hammer. After seeing Ginger shout to the gardener to stop making noise, the two invent a megaphone called the Assertive App which commands whoever listens to it to do what the person says. However, Ginger gets ahold of the convention and orders Tom, Ben, and Hank to give him candy. Angela, who was not happy that the guys did not show up at the announcement, seems to be immune to the Assertive App effects.
Tom and Ben plan to face Ginger and the gardener in a game of horseshoes event called the Kentossy Derby. But Ben receives an invitation from a university, and decides to attend that instead of the finals. There, he discovers he isn't going to be a colleague but a test subject to the effects of high doses of EMF. When he returns, he discovers he has become a magnet.
Angela invites Tom to the Scarf Spectacular Runway Neck-tacular event where she is to be honored as the Newcomer of the Year and showcase her scarves. She tells Tom not to embarrass her, however, when Tom engages in small talk and starts promoting the idea of a scarf with unlimited design possibilities, he attracts the attention of the scarf company executive Autumn Summers who revokes Angela's award. Tom apologizes to Angela and tries to include her design into the presentation of the app. But when Autumn states that scarves are not for everyone, Angela is offended and withdraws the idea. Tom and his friends make a website and video promotion for Angela and her scarves that garners a lot of orders, except they forget to put a price on the scarves.
Ben records a how-to video for a Flappy Bird-style video game called Flappy Talking Tom, where he plans to give Hank tips while the latter plays it. However, Hank turns out to be quite capable at the game, even beating Ben's high score. Hank challenges Ben to a match called the "Barrage in the Garage". Ben becomes very stressed over trying to beat Hank, who is very relaxed and eats a sandwich. Ben eventually collapses but wins the challenge, after which, Ginger comes and beats his score.
Angela has a concert at the park, but the guests do not care for her singing, and even tell her to sing quietly. But when Ginger takes posts photos of her getting upset and flipping a table, she starts becoming popular on the ClickFeed Hot New Celebrity List. Angela hires Ginger as her new image consultant. Ginger then sets up a fake date between Tom and Angela in order to film them breaking up. When that video tops the list, Angela has second thoughts about her celebrity image being more important than her singing career.
It's the annual best friends camping trip for the gang, but this year is a little different. Ben is not happy that Tom invited Angela to come, and that Hank invited Ginger. At the camp, where no one seems to care about traditions, they see an Ultramoon. Ben heads off on his own but discovers he is able to chat on the Internet with the moon, and becomes friends with it. Much to Angela and Tom's dismay, Ben becomes more enamored of his new friend, and after a hike, decides that he is going to go to the moon.
Ben leaves the gang and heads off to the Moon. He has a good time there. Meanwhile, Tom talks with the others about how Ben would always say no to his ideas, but the others recall situations where Ben's saying no was actually helpful. Tom decides to develop Talking Tom-Tom, an app that converts speech to drum beats, but can't work the computer. When Tom comes across a desktop video where Ben had been working on the app, he breaks down and cries, as he misses his friend and business partner. Ben is about to propose to the Moon but when another lover arrives, Ben breaks it off and returns to Earth.
Hank needs money to buy a hamburger, so Tom suggests that he uses a crowdfunding website CashKicker. Hank raises a million dollars but spends it all on the burgers. However, he runs into trouble when he has to make good on his promise of eating a burger with every person who had contributed to his campaign.
Tom and the gang have a Scare-a-thon TV Marathon, but Ginger gets mad at the gang when they refuse to go trick-or-treating with him. During the event, Ben uses his Total TV Immersion App to make it seem like they are in the show. But when Ginger arrives and starts capturing the gang by zapping them into his phone app, Tom and the rest have to do what Ginger says.