narrator: tonight special guest shark, billionaire founder of paul mitchell, john paul dejoria joins the sharks. in the tank, hopeful entrepreneurs get a once-in-a-lifetime chance to pitch the sharks in hopes of getting an investment to start, grow, or save their businesses. can i finish the rest of my information? [ laughing ] oh, man! it's the worst pitch i've ever seen. narrator: the entrepreneurs must convince a shark to invest the full amount they're asking for, or they'll walk away with nothing. johnny, tell your dad he's a great man. [ voice breaking ] i thank god that i got to work with that man. he's an innovator. he taught me everything i know. narrator: if the sharks hear a great idea, they're ready to invest using their own money. i'll give you the $400k. i'm gonna make you the same offer. silence, please. truth is, you built a brand. you know what you're doing. we got a deal. not that deal. not that deal? o'leary: this is the shark tank. there's nothing else like it on earth. narrator: who are the sharks? they're self-made millionaire and billionaire investors who are en