Kenickie (Jeff Conaway)’s Timeline and Summary

Kenickie reunites with Danny and the T-Birds at school.
He sneaks away with Rizzo and sleeps with her even though his condom breaks.
Rizzo tries to make him jealous by bringing Leo to the dance.
She succeeds, and Kenickie and Leo are kicked out for fighting.
At the drive-in, Kenickie finds out Rizzo is pregnant and promises to be a good dad.
She tells him it's not his.
Later, Kenickie challenges Leo to a race at Thunder Road in Greased Lightnin'
He is knocked out, forcing Danny to take his place.
His ego (and head) may be bruised, but he still offers to take Rizzo back at the carnival.
She accepts. Love is back in bloom.