<P> On the night before the big concert that is to transition the coast - to - coast tour into a world tour , a vet explains to Ian that the Chipmunks ' voices have worn down due to exhaustion , and suggests that they should take a lengthy rest . Rather than cancel the concert and hand out refunds , Ian advises the Chipmunks to lip sync . With Claire 's help , Dave is allowed into the concert , but is ejected by security . Witnessing the commotion , the Chipmunks realize that they 've been tricked and , deciding that they have had enough of Ian , they stall the concert . Ian locks them in a cage and prepares to take them for the world tour . Dave tries to convince Ian to let the Chipmunks go , but Ian refuses . Ian then leaves in his limo with the Chipmunks , and Dave chases them , but the Chipmunks have already escaped to Dave 's car . Dave immediately pulls over and admits that he loves them like his own family . Meanwhile , Ian looks in the cage , and is shocked to see that the Chipmunks have replaced themselves with international merchandising dolls . </P>
<P> On the night before the big concert that is to transition the coast - to - coast tour into a world tour , a vet explains to Ian that the Chipmunks ' voices have worn down due to exhaustion , and suggests that they should take a lengthy rest . Rather than cancel the concert and hand out refunds , Ian advises the Chipmunks to lip sync . With Claire 's help , Dave is allowed into the concert , but is ejected by security . Witnessing the commotion , the Chipmunks realize that they 've been tricked and , deciding that they have had enough of Ian , they stall the concert . Ian locks them in a cage and prepares to take them for the world tour . Dave tries to convince Ian to let the Chipmunks go , but Ian refuses . Ian then leaves in his limo with the Chipmunks , and Dave chases them , but the Chipmunks have already escaped to Dave 's car . Dave immediately pulls over and admits that he loves them like his own family . Meanwhile , Ian looks in the cage , and is shocked to see that the Chipmunks have replaced themselves with international merchandising dolls . </P>
the bad guy in alvin and the chipmunks
the bad guy in alvin and the chipmunks
Ian
Ian