He was just sobbing. And that's when Ursula finally saw her chance. She could work with this...She could finally destroy the merkingdom, and rule the ocean for herself...She sent out her eels to lure Kai to her lair, and bring him straight into her trap. (Yes please do Flotsam and Jetsam.)
"Hm-"
He looked up and saw them
"EEP!!"
Ok so here's how shit goes downn-basicalllyyyy-they lure him in with kindness-so more or less Ursula's like "yeah dude I can make you human and then you can be with your prince whooooooooooooooooooo-but like obviously there's some lil um-caveats there-) but basically the eel friends are like real sympathetic and like "yeah, Ursula can help, she's so coollll we'll take you to herrrrr-" yeah you get the idea-