Across the Universe is an episode of the ALVINNN!!! and The Chipmunks series.
Alvin bets Bocarter that alien life exists and only has a week to prove it or suffer embarrassing consequences.
Alvin daydreams about aliens during Miss Smith's lecture about people experiencing a panic over possible aliens. Bocarter proclaims the idea of aliens existing is ridiculous and Alvin, determined to prove him wrong, places a bet they do exist, leaving his dignity on the line. In order to have any chance of proving his stance, he uses flattery to enlist Simon's help, who, under unusual circumstances, agrees with Alvin and the existence of extraterrestrials. Simon begins his research in his lab, views into space, and builds a new device all the while being bugged by Alvin who's impatient for proof. Once he finishes his device, he reveals it to his brothers claiming it's a listening device. Alvin and Theodore begin listening for alien chatter before Dave calls them inside for dinner. When Alvin's impatience grows, Simon informs him decades could pass before anything is heard from space. Having only three days left on the bet, Alvin calls Bocarter in an attempt to extend the bet only to learn the exact consequence for losing; that night he has a nightmare of himself in Neville's bunny suit while everyone laughs at him. Desperate not to lose the bet, Alvin borrows some of Simon's equipment and attempts to construct his own alien dialogue with the help of Theodore. Alvin uses Theo's balloons and helium to float the recording into space in order to be picked up by Simon's recording satellite dish. Simon presents the recording to the press just before Alvin confesses. Having lost the bet, Alvin pleads to aliens while wearing the bunny suit and the aliens ignore him for the entertainment.
- A sneak-peek was posted on Nicktoons UK.
- Orson Wells' 1938 radio broadcast of The War of the Worlds by H.G. Wells is mentioned by Miss Smith.
- Theodore sucks the helium from a balloon, possibly as a poke at fans using the gas to make their voices higher to closer mimic the characters.