The plan succeeds, and the original plays on the commercial, much to the delight of Drake, who finally forgives his brother, but it comes with a price.
Right after the commercial airs, Josh receives a call from Krim, who informs him that his switching of the songs has violated the contract and Spin City plans to sue the duo for 5,000,000 dollars with the possibility of a prison sentence.
While at work as Drake gets a call, Mindy panics as Crazy Steve has gone insane due to being mistakenly scheduled on a Monday, which, according to Helen, is "his bad day".
Josh manages to calm him down by singing "She'll Be Coming 'Round the Mountain" and telling him to have some milk, for which a hesitant Helen finally appreciates his good work.
Still, as they are prepared to face the consequences, company president Nick Mateo says that Drake's song has become a number-one hit and extremely popular, with 30,000 emails and phone calls from fans wishing to buy it and dozens of downloads crashing their website's server.
Mindy has quit her job and Helen finally gives Josh the assistant manager position as a reward for his years of hard work.
Drake and Josh later return home to find their room restored to its former state, as Lula finally moved, as well as prawns sent over from Mateo.
Laura Fries of Variety was mostly positive on Really Big Shrimp, stating that "...Drake and Josh perfectly embody the goofy, unabashed fun that too few remember..." and complimented the two leads on their appeal, but complained that "...[Miranda] Cosgrove's sister Megan is an immensely irritating character.