Um Jammer Lammy - Plot

Plot

The game revolves around a shy lamb named Lammy, a southpaw guitarist of a rock band named MilkCan, alongside bassist and vocalist Katy Kat and drummer Ma-san. Although normally a nervous wreck, Lammy becomes much more confident once she has a guitar in hand. On the night before MilkCan is due for their first concert, Lammy has a dream of performing alongside Chop Chop Master Onion, only to realise she had been playing a vacuum cleaner the entire time. As Lammy laments how she is nothing without her guitar, Chop Chop tells her about how he lost his dojo, but it remains in his mind, complete with a casino, leaving behind the words "Dojo, Casino, It's all in the mind."

Lammy wakes up and realises she only has 15 minutes to get to her concert, she is blocked off by a fire. As the Chief Puddle attempts to get Lammy to help put out the fire since she's in a hurry, Lammy notices a billboard for a casino. Recalling Chop Chop's words, Lammy pictures her fire hose as a guitar and gains the confidence she usually has whilst playing. After putting out the fire, Lammy is rewarded with some pizza but eats too much that she is mistaken as a pregnant lady by Nurse Cathy Piller. Upon realising she wasn't actually pregnant, Cathy forces Lammy to help put all the newborns to sleep. It isn't long before Lammy has to help the schizophrenic Captain Fussenpepper pilot a plane to safety. Accidentally leaving her guitar on the plane upon leaving, Lammy goes to build a new one from scratch with the help from a beaver named Paul Chuck. Upon leaving with the guitar however, Lammy slips on a banana peel and dies, winding up in hell. After being dragged into performing in a concert for idol Teriyaki Yoko, Lammy manages to earn the right to be brought back to life, but not before running into her evil twin, Rammy. Lammy finally arrives at the concert at the same time as Katy and Ma-san, who had their own set of circumstances causing them to run late. With the band together, MilkCan go ahead and perform their concert before their adoring fans.

In Parappa's side-story, Katy asks Parappa, PJ Berri and Sunny Funny to help prepare for her live concert. This inspires Parappa and PJ to start up their own rock and roll band, which kind of falls short due to PJ's idea of what's considered 'rock and roll'.