ALVINNN!!! and the Chipmunks, Sick as a Chipmunk/Instant Gram

Eleanor and Jeanette wonder if Brittany would care for them in 'Sick as a Chipmunk', then in 'Instant Gram, Dave makes several embarrassing posts on social media, and Alvin tries to help. (S4, ep 23)

The Chipettes fall in love with a cute little mouse in 'Of Mice and Munks', and in 'Simon Saves the World', Simon's new invention creates a time loop and changing gravity inside the house. (S4, ep 24)

Alvin kidnaps Simon's robot Geizmo in 'Geizmo's Day Out', then in 'Unbored', when Dave takes away Alvin's phone, the boredom Alvin experiences is enough to drive him crazy. (S4, ep 25)