Sophia learns of Tom's affair with Lady Bellaston and breaks off contact with him.
Tom placates Lady Bellaston, who schemes against Sophia.
Tom and Sophia reunite at a masquerade ball despite a furious Lady Bellaston.
Tom alienates his foster father, abandons Sophia to Blifil and meets his putative father.
Squire Allworthy finds a baby in his bed and raises him as his own; malevolent Blifil wants Tom banished and Sophia's hand in marriage.