Last week on "The Young and the Restless," Ian moved into the house next door, to Adam and Chelsea's place. Adam is upset about this, but Ian said that he wanted to get to know his family. Adam warned him to focus on destroying Victor and to stay away from his family.

Having successfully hacked into Newman Enterprises' system, Ian continued to play with the company's numbers, which caused online sales for Brash & Sassy to skyrocket while Chelsea 2.0's sales went down. Abby accused Victoria of causing the latter brand's drop in sales, but Nick thought that someone must have hacked into their system. Ian also caused Victor's whole shipping line to go up for online bidding, and Billy bought the whole line before Ashley could stop him. Victoria and Nick asked Kevin what was going on, and Kevin said that everything was purchased by Jabot.

Meanwhile, Abby and Stitch had a big fight after Abby accused her boyfriend of working with Victoria to sabotage her. The two split up.

At the penthouse, Chelsea told Adam all about Nick's theory that the company has been hacked. Adam said that maybe Nick was just trying to stop Abby and Victoria from killing each other. Later, Abby dropped by and told Adam about the breakup and the strange things that have been happening at Newman.

Ian told Adam what he has done, and Adam said that he didn't want Jack involved in this. Adam called Jack to let him know about what happened, and Jack realized that Paragon was behind this—they want the Newmans and the Abbotts to destroy each other. Jack went to Jabot and told Ashley to sell the shipping line back to the Newmans, but she refused to do so.

Victor told the FBI to arrest the Abbotts in charge of Jabot, and later Jack told Victor that he's making a move against the wrong enemy. Jack told him to call the police, but Victor wasn't having it and told the FBI men to arrest Jack.

Here are "The Young and the Restless" spoilers from Sept. 28 to Oct. 2:

Sept. 28 (Monday): Victor prepares to battle against the Abbotts while Noah demands the truth from Marisa. Dylan discovers something about Hilary's disappearance.

Sept. 29 (Tuesday): Adam tells Ian to stop the Paragon Project while Jack and Billy find themselves in trouble.

Sept. 30 (Wednesday): Victor takes matters into his own hands; Kevin makes a surprising discovery about the hacking.

Oct. 1 (Thursday): Chelsea's world is shaken while Devon demands answers about Hilary.

Oct. 2 (Friday): Billy receives shocking news while Adam is about to get discovered.

"The Young and the Restless" airs from Monday to Friday at 12:30 p.m. on CBS.